On each of 4 crust slices, spread 1 teaspoon pesto; set aside. On each of remaining 4 slices, spread 1 tablespoon Caesar dressing. Place 2 cheese slices on each crust slice with Caesar dressing. Top cheese with pepper, 3 bacon slices, 2 tomato slices and 2 basil leaves. Top with remaining crust slices, pesto sides down.