Pre heat your oven to 375 degrees.
Take your chicken breasts and butterfly them (cut them in half lengthwise)
Then take the 4 chicken breast halfs and cut them in half to create 8 small chicken pieces. About 3-4 inches each.
In a baking dish layer 1 cup of the Buttery Marinara sauce in the bottom.
Place the chicken pieces on top and season with salt, pepper, and garlic powder and parmesan cheese.
Pour the additional 1 cup of sauce over the chicken.
Place the 8 slices of mozzarella over the top and bake for 45 minutes.
Remove when done and set aside.
Take the slider buns and brush each one with a small amount of butter and sprinkle Italian seasoning on top.
Pop those in the already warm oven on a baking sheet for about 3-4 minutes.
When the buns are warmed up, remove the top and using a spatula or tongs, remove one chicken serving from the dish (be sure to get the cheese too!) and place it on the bun.
Repeat with the remaining buns.
Dip in extra marinara and enjoy!