01 - In a large bowl, toss the chicken slices with olive oil, chili powder, cumin, paprika, garlic powder, salt, and black pepper until evenly coated.
02 - Heat a large skillet over medium-high heat. Add the seasoned chicken and cook for 5–7 minutes, stirring occasionally, until cooked through and lightly browned. Remove the chicken and set aside.
03 - In the same skillet, add the bell peppers and onion. Sauté for 5–6 minutes until softened and slightly caramelized. Remove from the pan and set aside.
04 - Wipe the skillet clean and reduce heat to medium. Melt a small amount of butter in the pan.
05 - Place a tortilla in the skillet. Sprinkle 1/4 of the combined cheeses onto half of the tortilla. Top with 1/4 of the chicken and sautéed vegetables. Fold the tortilla over to enclose the filling.
06 - Cook for 2–3 minutes on each side, pressing gently, until golden brown and the cheese is melted.
07 - Repeat with remaining tortillas and filling.
08 - Slice quesadillas into wedges and serve warm with salsa, sour cream, cilantro, and lime wedges as desired.