This Keto Chicken Fajitas recipe is a perfect go-to recipe for an easy dinner the entire family loves. This recipe is gluten-free, keto-friendly, low-carb, and ready in just about 30 minutes.

Who doesn't love fajitas? They're such an easy dinner option, but for some reason, fajitas often get overlooked as a make-at-home meal option. We're here to change that with our easy keto fajitas packed with onions, bell peppers, and chicken. You can also make this into a sheet pan-style dinner if you want a more hands-off approach.
Let's make this delicious Mexican food with a few simple steps!
Jump to:
- Preparation and cooking overview
- Chef's note
- 🍗 Ingredients for this keto chicken fajitas recipe
- Ingredient substitutions
- Additional ingredients
- Cooking tools required
- Tools substitute options
- How to make Keto Chicken Fajitas: step-by-step guide
- Cooking methods
- Preparation steps
- Cooking instructions
- What to serve with keto chicken fajitas?
- How to make it healthier?
- Time-saving tips
- What can I prepare ahead of time?
- Storage and reheating instructions
- Recipe wrap-up and conclusion
- Frequently asked questions
- 📖 Recipe
Preparation and cooking overview
Season and sear the chicken strips in a hot skillet to make these keto fajitas. Then, sauté bell peppers and onions, add the chicken back in, and season to taste. Within 30 minutes, you'll have a hearty and flavorful meal ready to enjoy!
Chef's note
Add cayenne pepper or red chili flakes to the taco seasoning if you enjoy spicy flavors. For an extra burst of freshness, try using chopped cilantro or parsley as a garnish. Get ready for a deliciously zesty experience!
🍗 Ingredients for this keto chicken fajitas recipe
Let's make some low-carb fajitas with the following simple ingredients:
Ingredient substitutions
Is there anything in the ingredient list you want to swap? Here are some keto-friendly alternatives!

Additional ingredients
Add a few extra ingredients to personalize this chicken fajitas recipe to your liking. Some keto-friendly options are:
Cooking tools required
To make our Low Carb Chicken Fajitas recipe, you will need the following kitchen tools:
Tools substitute options
How to make Keto Chicken Fajitas: step-by-step guide
Cooking methods
Preparation steps
- Gather all the required ingredients and measure them.
- Cut your boneless, skinless chicken breasts into thin even-sized strips.
- Wash the bell peppers and Roma tomato.
- Thinly slice the bell peppers and onion into even-sized strips. If you're using a jalapeño or serrano pepper, slice it thinly.
- Cut the Roma tomato into quarters and remove the seeds.
Cooking instructions
- Heat a 10" or larger cast-iron skillet over medium-high heat.
- Add 1 tablespoon of avocado oil and 1 tablespoon of butter.
- Season the chicken strips liberally with taco seasoning. Working in batches, add the chicken to the skillet in a single layer. Cook for 2-3 minutes on each side until browned and slightly charred.
- After all the chicken is cooked, remove from the skillet and set aside.
- Add the remaining avocado oil and butter to the skillet.
- Add in the onion, bell peppers, hot pepper (if using), and tomato (if using).
- Season with remaining taco seasoning to taste. Cook for 7-10 minutes until bell peppers soften and onions are translucent.
- Add the chicken back to the skillet to warm through. Adjust seasonings to taste.
- Serve hot on lettuce leaves with lime wedges, sour cream, avocado slices, and pico.

Chef's pro tip
Cook the chicken in batches and avoid stirring it too often. In this way, the chicken will sear properly and develop a rich, brown crust. Also, ensure enough space in the pan for the veggies to sizzle without overcrowding; this will prevent them from steaming and turning soggy.
What to serve with keto chicken fajitas?
You can serve the chicken fajita as it is or pair it with various toppings and side dishes to elevate the flavor profile.
Here are some topping options
Keto tortilla options
Here are some side dish options
How to make it healthier?
Time-saving tips
What can I prepare ahead of time?

Storage and reheating instructions
Storage instructions
Allow the leftover fajitas to cool to room temperature before you place them in an airtight container in the fridge. They'll remain fresh and delicious for 3-4 days.
Reheating best practices
Recipe wrap-up and conclusion
This vibrant Keto Chicken Fajitas recipe is the perfect keto version of the classic dish. Enjoy tender fajita chicken and a delightful mix of veggies that bring the restaurant-style bold flavors straight to your dining table. With some basic ingredients and simple cooking instructions, you can easily make this Mexican recipe without hassle!
Looking for more Mexican keto recipes? Check these out 👇
Frequently asked questions
📖 Recipe

Keto Chicken Fajitas
Ingredients
- 2 tablespoons avocado oil
- 2 tablespoons unsalted butter
- 1 pound boneless skinless chicken breasts cut into strips
- 1 medium onion thinly sliced
- ½ green bell pepper thinly sliced
- ½ red bell pepper thinly sliced
- ½ yellow bell pepper thinly sliced
- ½ orange bell pepper thinly sliced
- 1 jalapeño or serrano thinly sliced (optional)
- 1 Roma tomato quartered and seeded (optional)
- 1 ½ tablespoons taco seasoning
- Sea salt to taste
Instructions
- Heat a 10" or larger cast-iron skillet over medium-high heat.
- Add 1 tablespoon of avocado oil and 1 tablespoon of butter.
- Season the chicken strips liberally with taco seasoning. Working in batches, add the chicken to the skillet in a single layer. Cook for 2-3 minutes on each side until browned and slightly charred.
- After all the chicken is cooked, remove from the skillet and set aside.
- Add the remaining avocado oil and butter to the skillet.
- Add in the onion, bell peppers, hot pepper (if using), and tomato (if using).
- Season with remaining taco seasoning to taste. Cook for 7-10 minutes until bell peppers soften and onions are translucent.
- Add the chicken back to the skillet to warm through. Adjust seasonings to taste.
- Serve hot on lettuce leaves with lime wedges, sour cream, avocado slices, and pico.
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