Deep Hamburger & Pepperoni Pie

1 box Pillsbury ready-bake pie crust (2 rolled pie crusts) For the Filling: 2 cups shredded mozzarella cheese 1/2 pound ground beef 1 cup pepperoni slices 1 1/2 cups pizza sauce or marinara 1 cup shredded cheddar or provolone cheese 1 teaspoon Italian seasoning