4 Layer Pizza Dip

4 Layer Pizza Dip

4 Layer Pizza Dip8 ounces Philadelphia cream cheese (room temperature)1/2 cup sour cream8 ounces finely shredded Italian cheese blend (divided)14.5 ounce can diced tomatoes1/4 teaspoon galic powder1/4 teaspoon onion powder1 tablespoon Italian seasoning1/2 teaspoon kosher salt1/2 teaspoon pepper12 slices pepperoni4