In a large bowl, mix biscuit pieces, pizza sauce, 3/4 cup pepperoni, and 1/2 cup cheese.
Spray a baking dish with olive oil, and spoon the biscuit mixture into the dish.
Bake for 20 minutes or until lightly browned, and the center is cooked.
Top with the remaining cup of cheese, 1/4 cup pepperoni, and bake an additional 5 minutes or until cheese has melted. If desired, broil until lightly browned on top, and enjoy!