Preheat your oven to 400°F while you slice the ciabatta rolls in half lengthwise. Brush each cut side lightly with olive oil so the bread crisps up nicely in the oven. Arrange the halves cut-side up on your prepared baking sheet.
Spoon the pizza sauce onto each piece of bread and spread it evenly with the back of a spoon. Leave a small border around the edges so the sauce doesn't spill over while baking. This layer becomes the base your mummy bandages will sit on top of.
Peel your zucchini into thin ribbons and lay them across the sauce in random criss-cross patterns. Pull the mozzarella string cheese into similar thin strips and layer them over the zucchini at slightly different angles. The mix of textures is what gives these that classic wrapped mummy look.
Place two small olive slices near the top of each pizza half to act as the mummy's eyes. I like to tuck them just slightly under a strip of cheese so they peek out naturally once everything melts together in the oven.
Slide the baking sheet into your preheated oven and bake for 8 to 10 minutes, until the cheese has melted and the edges of the bread turn golden. Let the pizzas cool for a minute or two before serving them warm.