In a medium mixing bowl, combine the bread crumbs, Italian seasoning, onion powder, garlic powder and parmesan cheese. Mix well.
Put the egg whites into a medium bowl as well and whisk with a fork to loosen them up a bit. About 1-2 minutes should do the trick.
Set up an "assembly line" workstation. First comes the plate of raw chicken, then a bowl with the egg whites, and lastly the bread crumb mixture.
Dip a chicken breast into the egg whites, being sure to coat both sides well. Then dip into the bread crumbs and turn several times to coat well. Place the chicken on a parchment-lined cookie sheet.
Repeat with the remaining chicken breasts.
Bake at 350 F. for approximately 40-50 minutes. The chicken should be at least 165 F. on a thermometer. Bake until it reaches that temperature. If you are adding mozzarella, sprinkle some on in the last 5 minutes of baking. Watch carefully and remove the moment cheese is melted.
Serve with some marinara poured over the top. No need to warm it first because the chicken will still be hot if served immediately.
Notes
This is just as good without dairy. Simply omit the cheese from the recipe.Leftovers: Make a yummy chicken sandwich or chicken wrap with this the next day.