Step 1

Combine olive oil, lime juice, chili powder, cumin, garlic powder, salt, and pepper in a bowl. Add chicken breast and toss until well coated. Cover bowl and refrigerate, 4 hours to overnight.

Step 2

Heat a cast iron skillet over medium-high heat. Add chicken breasts to the hot skillet, reserving the marinade. Cook until browned, 6 to 8 minutes. Remove chicken from skillet, slice, and set aside.

Step 3

Heat 1 tablespoon olive oil in the same skillet and add onion, bell peppers, and reserved marinade. Cook until vegetables are soft and tender, 5 to 7 minutes. Add chicken back to the skillet, stir, and cook until warmed through, 2 to 4 minutes.