01 - Heat 1 tablespoon olive oil in a large skillet over medium-high heat. Add the chicken strips and cook for 4–5 minutes, stirring, until lightly browned and cooked through. Remove chicken from the skillet and set aside.
02 - Add the remaining 1 tablespoon olive oil to the skillet. Sauté the bell peppers, onion, and garlic for 4–5 minutes, until softened.
03 - Return the chicken to the skillet. Add cumin, smoked paprika, chili powder, salt, and pepper. Stir well to combine and cook for another minute. Remove from heat.
04 - Place a tortilla on a clean surface. Sprinkle a quarter of the cheddar and mozzarella cheese over half of the tortilla, then top with a quarter of the chicken and pepper mixture. Fold the tortilla in half to enclose the filling. Repeat with remaining tortillas and fillings.
05 - Wipe out the skillet and heat over medium heat. Cook each quesadilla for 2–3 minutes per side, pressing lightly, until golden brown and the cheese is melted.
06 - Slice into wedges and serve hot with sour cream, salsa, and fresh cilantro if desired.