Heat the olive oil in a large skillet over medium-high heat.
Add the sliced chicken to the skillet and season with chili powder, cumin, garlic powder, salt, and pepper. Cook for 3-4 minutes, stirring occasionally, until the chicken is cooked through and no longer pink.
Add the sliced bell pepper and onion to the skillet and sauté for an additional 2-3 minutes, until they are tender but still crisp.
Remove the skillet from heat and warm the flour tortillas in a dry pan for about 30 seconds on each side.
To assemble the fajitas, place a portion of the chicken and vegetable mixture on each tortilla.
Top with chopped cilantro and a squeeze of fresh lime juice, then fold the tortillas over the filling.
Serve immediately with lime wedges on the side for extra zest.
Notes
Serve the fajitas on a rustic wooden board with lime wedges and a sprinkle of cilantro for a vibrant look.