Preheat your oven to 450 degrees. This temperature gives the best crust to the chicken.
Take a basic cookie sheet, line it with aluminum foil or parchment paper. Spray with some olive oil cooking spray.
In separate dishes, beat 2 eggs together in one dish, and mix the crust ingredients together in another dish.
Cut chicken breasts in half, length-wise, then coat in the egg wash, then the Parmesan mixture. Lay on the cookie sheet, and repeat with remaining chicken breasts.
Once chicken is all coated and on the cookie sheet, mix together grapes and butter in a separate mixing bowl and place grapes around the chicken breasts. Do not put any grapes on top of the crust.
Bake in the oven for 20-25 minutes. Chicken should come out golden brown and grapes should look golden and roasted.
Side note: If you'd like a sauce, you can reduce 1/2 cup balsamic vinegar on the stove to make a glaze. It's not necessary, but definitely a tasty option!