In a large bowl, combine olive oil, chili powder, cumin, garlic powder, onion powder, paprika, and lime juice.
Add chicken strips to the bowl and toss to coat them evenly with the marinade.
Heat a large skillet over medium-high heat and add the marinated chicken. Cook until browned and cooked through, about 5-7 minutes.
Add the sliced bell peppers and onion to the skillet and sauté until softened, about 5 minutes.
Warm the flour tortillas in a separate pan or microwave for a few seconds.
Serve the chicken and vegetables in warm tortillas and enjoy.