Preheat the Oven to 375°F (190°C) and grease a 9x13 inch baking dish with non-stick spray.

In a skillet, cook the lean ground beef over medium heat for 3-4 minutes until crumbled and no longer pink. Season with salt and pepper, drain excess fat.

Add diced bell peppers to the skillet and sauté for 3-5 minutes until softened. Drain any liquid and stir in the pizza sauce, warming briefly.

Cut the Pillsbury Grands Biscuits into six pieces each and layer evenly in the greased baking dish.

Pour the beef and vegetable mixture over the biscuit pieces, folding gently to combine.

Sprinkle shredded mozzarella cheese and sliced turkey pepperoni evenly over the top.

Bake uncovered for 25-30 minutes until bubbly and golden brown. Use foil if it begins to brown too quickly.

Let cool for 5-10 minutes before slicing and serving warm.