Preheat oven to 350 F. Slice french bread lengthwise, then again in half. Place onto a baking sheet.
Drizzle olive oil evenly over the french bread. Bake for 5 minutes. Evenly spread with pizza sauce over french bread. Sprinkle with shredded mozzarella cheese and top with pepperoni slices. Bake for 6-7 minutes.