Place Pie Crust in a 9-inch baking dish. Using a fork, pierce crust 2-3 times.
For Filling: In a large bowl, add Ricotta, parmesan cheese, parsley, lemon zest, garlic, onion, and eggs, mix well, then add zucchini spirals, mix until fully combined.
Place Zucchini cheese filling on top of pie crust and spread evenly, until filled. Top with mozzarella cheese and spread evenly.
Place in oven at 350 degrees, and bake for 45 min, until golden brown and cheese is melted. Remove from heat and ready to serve.