Preheat oven to 450 F. Line a large baking sheet with parchment paper. Shred zucchini.
Add zucchini to a large bowl and let sit 10-15 minutes. Drain excess water from zucchini bowl. Using a tea towel or several sturdy paper towels, add in 1/2 cup of zucchini into towel and wring dry. Repeat with remaining zucchini. When you are finished, you should have about 2 cups of zucchini.
Add zucchini, egg, cheese, pepper and flour to a large mixing bowl. Mix until all ingredients are thoroughly combined.
Divide zucchini mixture in half. Dump each half onto the parchment paper to make two crusts. Using a spatula, spread out the batter so that it forms a round crust approximately 9 inches in diameter and 1/8 inch thick.
Bake for 15-20 minutes or until edges are golden brown. Flip the crusts over and bake an additional 10 minutes until top is crispy. Flip pizza crusts back over.
Lower oven temperature to 400 F. Top each with a layer of marinara sauce, followed by slices of fresh mozzarella, sliced bell peppers and fresh basil leaves. Bake for about 8-10 minutes or until cheese is melted.
Cut oranges and apples into slices. Slice pizzas into quarters.
Serve pizza with fruit on the side.