1. Prepare the Chicken Filling: In a medium bowl, combine the shredded or diced cooked chicken, salsa, chili powder, cumin, garlic powder, salt, and pepper. Mix everything thoroughly until the chicken is well coated with the seasonings and salsa. This ensures every bite is flavorful.

2. Assemble the First Quesadilla: Lay one flour tortilla flat on a clean surface. Sprinkle about 1/4 cup of the shredded cheese evenly over one half of the tortilla. This will be the base layer for the filling.

3. Add Chicken and More Cheese: Spoon about 1/4 of the chicken mixture over the cheese on the same half of the tortilla. Then, sprinkle another 1/4 cup of cheese over the chicken mixture. This double layer of cheese helps bind the quesadilla together and ensures maximum meltiness.

4. Fold and Prepare for Air Frying: Carefully fold the empty half of the tortilla over the filled half, creating a crescent shape. Lightly brush the top of the folded quesadilla with a little olive oil. This helps achieve that beautiful golden-brown crispness in the air fryer.

5. Air Fry the Quesadillas: Preheat your air fryer to 375 F (190 C) for 3-5 minutes. Place one or two quesadillas (depending on the size of your air fryer basket) in a single layer in the preheated basket. Do not overcrowd the basket, as this will prevent them from getting crispy.

6. Cook Until Golden and Crispy: Air fry for 4-5 minutes, then carefully flip the quesadilla using tongs. Continue to air fry for another 3-4 minutes, or until both sides are golden brown and crispy, and the cheese is fully melted and bubbly. The exact time may vary slightly depending on your air fryer model.

7. Repeat and Serve: Remove the cooked quesadilla from the air fryer and transfer it to a cutting board. Repeat the process with the remaining tortillas and filling. Once all quesadillas are cooked, cut each crescent-shaped quesadilla into 2-3 triangles for easy serving.