In a bowl, beat cream cheese and Italian seasoning. Spread in an ungreased 9-in. microwave-safe pie plate. , Combine mozzarella and Parmesan cheeses; sprinkle half over the cream cheese. Top with the pizza sauce, remaining cheese mixture, green pepper and onion. , Microwave, uncovered, on high for 2-3 minutes or until cheese is almost melted, rotating a half-turn several times. Let stand for 1-2 minutes. Serve with breadsticks or tortilla chips.