Heat oven to 400 degrees F. Line a large baking sheet with parchment paper. On a floured surface, roll your dough into the thinnest rectangle that you can, pulling and stretching it as needed. You’re looking for 1/16-inch thickness; the longer sides should be parallel to you. Spread about half of the tomato sauce over the whole rectangle in a thin, but not too thin, layer. Season with salt and pepper. Sprinkle with about half the cheese, scatter with slices of pepperoni and slivers of basil, if using. Fold the left and right sides of the dough over the filling to meet at the center. Spread the top with more sauce, seasonings, cheese, and toppings. Fold the top and bottom in so they meet in the center; spread the top with more sauce, seasonings, and remaining cheese and toppings. Fold top half over bottom half, take a deep breath, and lift this from the counter and onto the parchment-lined baking sheet. Prick the top all over with a fork.