Combine all of the meatball ingredients (except the olive oil) in a medium bowl and mix thoroughly. Form into 15 meatballs. Heat the oil in a nonstick pan and fry the meatballs until golden brown – about 3 minutes per side. Remove and place on a paper towel lined plate.
Place the meatballs in an oven proof dish. Spoon the sauce evenly over each meatball. Top with shredded mozzarella cheese, and a slice of pepperoni. Bake for 10 minutes at 375 degrees, or set under the broiler for 2 – 3 minutes until the cheese is melted and the pepperoni is getting crisp. Serve hot.
Approx nutrition info per serving: 380 calories, 28g fat, 3g net carbs, 27g protein