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Easy Sheet Pan Fajitas Recipe with Peppers and Onions Perfect for Quick Dinners

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A quick and easy sheet pan fajitas recipe featuring juicy chicken, caramelized bell peppers, and onions, perfect for busy weeknights with minimal cleanup.

Ingredients

Scale
  • 1.5 pounds chicken breast or thighs, sliced into strips
  • 3 medium bell peppers (red, yellow, green), sliced into strips
  • 1 large yellow or white onion, sliced thinly
  • 2 tablespoons olive oil
  • 2 tablespoons fajita seasoning (store-bought or homemade)
  • 1 teaspoon garlic powder
  • 1 teaspoon smoked paprika
  • 1 teaspoon cumin
  • 1 teaspoon salt
  • ½ teaspoon black pepper
  • Juice of 1 lime
  • Fresh cilantro, chopped (optional)
  • Flour or corn tortillas, warmed for serving

Instructions

  1. Preheat your oven to 425°F (220°C).
  2. Slice the chicken into ½-inch strips. Slice the bell peppers and onions into similar-sized strips.
  3. In a small bowl, mix together fajita seasoning, garlic powder, smoked paprika, cumin, salt, and black pepper.
  4. Place the sliced chicken, peppers, and onions into a large bowl. Drizzle with olive oil and sprinkle the seasoning mix over everything. Toss until evenly coated.
  5. Spread the chicken and vegetables in a single layer on a rimmed sheet pan, leaving space to avoid overcrowding.
  6. Roast in the oven for 18-22 minutes, turning halfway through (around 10 minutes), until chicken reaches 165°F (74°C) and peppers are tender with slight char.
  7. Remove from oven and squeeze fresh lime juice over the fajitas. Toss gently to combine.
  8. Serve immediately with warmed tortillas and garnish with chopped cilantro if desired.

Notes

If peppers seem undercooked after 20 minutes, roast a few extra minutes but watch chicken closely to avoid drying out. Let chicken rest a couple of minutes after roasting to keep it juicy. Avoid overcrowding the pan to ensure even roasting. For gluten-free, use corn tortillas or serve over rice. Vegetarian options include firm tofu or mushrooms. Frozen sliced peppers and onions can be used with slightly longer roasting time.

Nutrition

Keywords: sheet pan fajitas, chicken fajitas, quick dinner, easy fajitas, bell peppers, onions, one pan meal, healthy dinner

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