Preheat your oven to 400°F (200°C).
Grate the zucchinis and place them in a clean kitchen towel.
In a large bowl, combine the grated zucchini, mozzarella, Parmesan, garlic, egg, breadcrumbs, salt, pepper, and oregano.
Mix until well combined, ensuring all ingredients are evenly distributed.
Using your hands, form the mixture into small balls or patties and place them on a parchment-lined baking sheet.
Bake in the preheated oven for 20-25 minutes or until golden brown and crispy.
Let the bites cool slightly before serving.