Combine breadcrumbs and parmesan cheese in a bowl. Melt the butter in another bowl.
Lightly brush the butter onto the chicken, then dip into breadcrumb mixture.
When the air fryer is ready, transfer to the air fryer basket, in batches as needed and spray the top with oil.
Air fryer 360F° 5 minutes, turn and top each with 2 tbsp sauce and 1 ½ tbsp of shredded mozzarella cheese.
Cook 3 more minutes or until cheese is melted.
