Preheat oven to 500F. Drizzle a quarter sheet pan with olive oil, using your fingers to make sure the entire surface is coated. Set aside. (You can also use a pizza stone)
Grate the zucchinis, and squeeze all the water out- either over a fine mesh strainer or with a paper towel. Mix with the mozzarella, adding salt & pepper to taste.
In another bowl mix together the ricotta and garlic. Add salt & pepper, and red pepper flakes to your preferred level of spiciness. (I liked mine with a little kick.)
On a floured surface roll/stretch out your dough. Spread the ricotta mixture over the bottom, and top with the shredded zucchini/mozzarella mixture.
Reduce temp to 450F and bake for 12-14 minutes, or until the cheese is golden and bubbly.