Place the chicken breasts on a work surface. Slice them in half and pound to create 4 cutlets. (See how in this post.)
Season chicken with salt and pepper on both sides.
Line up three shallow bowls, cake or pie pans are perfect.
In the first, place the flour.
In the second, whisk together the eggs.
In the third, combine the breadcrumbs and garlic powder.
Start by coating both sides of a chicken breast in the flour, then dip both sides into the eggs, and then into the breadcrumbs. Repeat with the remaining chicken cutlets.
Spray both sides of the chicken with olive oil spray.
Add chicken, in batches, to the air fryer basket, without overlapping. Cook at 400°F for 7 minutes turning over halfway through the cooking time.
Repeat until all chicken is cooked.
Garnish with parsley.
