In a skillet over medium heat, brown beef, onion and green pepper; drain. Stir in pizza sauce, pepperoni and seasoning; simmer over low heat for 10 minutes. Spoon beef mixture into a greased 13"x9" baking pan. Place mozzarella cheese slices over hot beef mixture. In a bowl, combine eggs, milk and oil; whisk for one minute. Stir in flour salt and 1/2 cup Parmesan cheese. Pour batter over mozzarella cheese; sprinkle with remaining Parmesan cheese. Bake, uncovered, at 400 degrees for 20 to 30 minutes, until puffed and golden.