Preheat oven to 400°F (200°C) and grease a 9x9 inch baking dish.
Place shredded zucchini in a clean kitchen towel and squeeze forcefully to remove all excess moisture.
In a medium bowl, combine the dried zucchini, beaten eggs, and 1/2 cup of mozzarella cheese.
Press the zucchini mixture firmly into the bottom of the prepared baking dish.
Bake for 20 minutes or until the zucchini base is set and lightly browned.
Spread pizza sauce evenly over the base, then top with the remaining 1.5 cups of mozzarella and pepperoni slices.
Bake for an additional 15 minutes until the cheese is melted and bubbly.