Preheat oven to 450°. Line a large baking sheet with foil and spray lightly with cooking spray.
Combine breadcrumbs, Parmesan cheese, garlic powder, and Italian seasonings in a shallow bowl. Melt the butter in another bowl. Lightly brush the butter onto the chicken, then dip into breadcrumb mixture. Place on baking sheet and repeat with the remaining chicken.
Lightly spray chicken with a little more cooking spray (this makes it crispy) and bake in the oven for 20 minutes. Remove from oven, spoon sauce over chicken and top with shredded cheese. Bake 5 more minutes or until cheese is melted and chicken is done. Serve over whole wheat spaghetti or with a salad.