Preheat your air fryer to 350°F (175°C).
In a small bowl, whisk together the sour cream, lime juice, chili powder, garlic powder, salt, and black pepper until smooth.
Lightly spray the air fryer basket with cooking spray.
Spread the chili lime sauce evenly over one tortilla and place it sauce-side up in the basket.
Sprinkle the cooked chicken evenly across the tortilla, then top with the shredded Mexican-blend cheese.
Place the second tortilla on top and lightly spray it with cooking spray.
Secure the edges with two or three toothpicks to keep the tortillas from lifting during cooking.
Cook the Air Fryer Chicken Quesadillas for 8 minutes, carefully flipping halfway through cooking.
Remove from the air fryer and let cool for 2–3 minutes.
Slice into four wedges and serve with guacamole, pico de gallo, salsa, or sour cream.