Set your air fryer to 375ºF to preheat.
Combine the oil with all the seasonings in a small bowl and put it aside.
In a separate bowl, blend cream cheese, Parmesan, mozzarella, and pick your choice of add-in for the filling.
Place each chicken breast on a cutting board and carefully slice almost through the middle, keeping it hinged.
Fill each chicken breast with a quarter of the cheese mixture and fold it closed to seal in the filling.
Brush the outside of each stuffed chicken breast with the oil and seasoning mix.
Place the chicken in the air fryer basket and cook for 20 minutes, flipping halfway until the chicken is fully cooked and reaches 165ºF internally.