Keto Chicken Fajitas
Sizzling strips of seasoned chicken thighs with charred bell peppers and onions, finished in lime and a sour cream drizzle. This skillet fajita dinner is ready in 30 minutes and serves four at just 7.5g net carbs per serving.
Head of Nutrition · June 17, 2026
Nutrition per serving
Per serving · makes 4. Values are estimates; brands vary.
These sizzling keto chicken fajitas deliver all the smoky, charred flavor of the classic dish without the tortillas or the carb crash. Juicy spiced chicken thighs and blistered peppers come together in one skillet in just 30 minutes.
Ingredients
- 1.5 lbs boneless skinless chicken thighs, sliced into 1/2-inch strips
- 2 tablespoons avocado oil, divided
- 1 medium red bell pepper, sliced into thin strips
- 1 medium green bell pepper, sliced into thin strips
- 1/2 medium yellow onion, thinly sliced
- 2 teaspoons chili powder
- 1 teaspoon ground cumin
- 1 teaspoon smoked paprika
- 1/2 teaspoon garlic powder
- 1/2 teaspoon kosher salt
- 1/4 teaspoon cayenne pepper (optional, for heat)
- 1 lime, juiced (about 2 tablespoons), plus wedges for serving
- 2 tablespoons chopped fresh cilantro
Instructions
- 1
In a small bowl, combine the chili powder, cumin, smoked paprika, garlic powder, salt, and cayenne. Toss the sliced chicken with the spice blend and half the lime juice until evenly coated.
- 2
Heat 1 tablespoon avocado oil in a large cast-iron or stainless skillet over medium-high heat until shimmering. Add the chicken in a single layer and cook undisturbed for 3-4 minutes, then stir and cook 3-4 minutes more until browned and cooked through. Transfer to a plate.
- 3
Add the remaining 1 tablespoon oil to the same skillet. Add the bell peppers and onion and cook, stirring occasionally, for 5-6 minutes until charred at the edges but still slightly crisp.
- 4
Return the chicken and any juices to the skillet. Toss everything together and cook for 1 minute to reheat.
- 5
Remove from heat, squeeze over the remaining lime juice, and scatter with fresh cilantro. Serve hot with lime wedges.
Tips & notes
- Skip the tortillas and serve over cauliflower rice, in lettuce cups, or alongside sliced avocado to keep it keto. Each topping adds minimal carbs.
- Chicken thighs stay juicier than breasts, but you can swap in 1.5 lbs of chicken breast strips and reduce cook time by 1-2 minutes to avoid drying them out.
- Store leftovers in an airtight container for up to 4 days. These reheat well in a hot skillet, making them ideal for meal prep.
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Frequently asked questions
- How many carbs are in keto chicken fajitas?
- Each serving has 7.5g net carbs (10g total carbs minus 2.5g fiber), 415 calories, 36g protein, and 26g fat. This recipe makes 4 servings.
- Are bell peppers keto-friendly?
- Yes, in moderation. Bell peppers are one of the lower-carb vegetables, with about 4-6g net carbs per cup. Using just one red and one green pepper across four servings keeps the carbs in check while delivering classic fajita flavor.
- What can I serve keto chicken fajitas in instead of tortillas?
- Serve them in butter lettuce or romaine leaves as wraps, over cauliflower rice, alongside sliced avocado and sour cream, or with low-carb almond flour tortillas. All keep the meal under 9g net carbs per serving.
