You shouldn't need extra salt because the parm is salty, but test it to make sure.
Dip the cheese in the egg, then roll in the coating and repeat for each stick so they are each coated twice and FULLY coated.
Place the cheese sticks on the plate and freeze for at least one hour or until frozen.
Set the air-fryer to 390F and cook for 10-13 minutes. Turn them after six minutes to brown the underside.