Preheat oven to 400°.
Salt and pepper chicken breasts on both sides.
Combine breadcrumbs, 1/2 cup grated parmesan, garlic powder in a shallow bowl.
Put two eggs and 1 tbsp flour into a shallow bowl and whisk.
Heat 2 tbsp olive oil in a skillet over medium-high heat.
Dip chicken pieces in egg mixture letting excess drip off.
Dip into flour mixture, shaking extra off and put into hot pan.
Do not move, let it brown 2-3 minutes on each side.
Remove from heat, top with mozzarella, parmesan, tomatoes and pepperoni.
Place in oven for about 7-8 minutes until chicken is done (remember it is thin) and cheese is bubbly.
Garnish with parsley. I served mine with fusilli pasta.