Split chicken breasts in half lengthwise. Then pound each piece  to flaten to an even thickness.

Sprinkle chicken with salt and spread mayo on both sides.

In a bowl, mix together the panko, parmesan, and garlic powder. Dip each piece of chicken in the panko/parmesan mixture to coat.

Place chicken in a single layer place in the air fryer.

Cook at 390 for 15 minutes TURNING ONCE after 10 minutes. Serves 4.