Preheat the oven to 425°F.
Slice the 1 loaf of French bread in half lengthwise so you have two long pieces. Place both halves cut-side up on a baking sheet.
Spread 1/2 cup homemade pizza sauce evenly over the cut surface of both bread halves, leaving a small border around the edges.
Sprinkle 2 cups shredded mozzarella cheese evenly over the sauce.
Prepare and arrange toppings: slice tomatoes (and olives, if preferred) to your desired thickness, then distribute pepperoni, olives, and sliced tomatoes evenly over the cheese.
Bake on the middle oven rack for 12–15 minutes, or until the cheese is melted, bubbly, and the bread edges are lightly golden.
Remove from the oven and scatter basil leaves over the hot pizzas.
Let cool 1–2 minutes, slice into individual servings, and serve.