Rinse the chicken breasts under cold running water and pat dry. Pound chicken breasts to flatten, see prep tip.
In a small bowl, combine bread crumbs, garlic powder, salt and pepper. Mix well.
In another small bowl add the egg white.
In a large nonstick pan, melt butter. Right next to the cook top, dip each chicken breast in egg white and then into bread crumbs, to coat. Repeat with all chicken breasts and add to hot pan. Fry chicken on each side, over medium heat, about 5-6 minutes, until chicken is done and no longer pink inside. Remove chicken to a plate.
In the same pan, add spaghetti sauce and heat thoroughly. Add cooked chicken back to pan and cover with sauce. Top each piece with ¼ cup shredded cheese and 1 tablespoon Parmesan cheese, cover and cook until cheese is melted.
Using a spatula, remove each piece to a dinner plate.