Combine cream cheese, garlic powder, salt and Italian seasoning in bowl.
Spread cream cheese mixture in a greased 8" x 8" pan.
Sprinkle with 1/2 cup of the Mozzarella and 1/2 cup of the Cheddar Cheeses.
Top cheeses with pizza sauce and green pepperS
Top with remaining cheese and pepperoni slices.
Bake at 350° for 20-22 minutes.
Serve with tortilla chips or breadsticks.