Preheat your oven to 200°C (400°F) and line a baking sheet with parchment paper to prevent sticking.
Rinse the zucchinis under cold water, pat them dry, and then grate them using a grater or food processor. Ensure to remove excess moisture by squeezing them with a clean towel.
In a mixing bowl, combine the grated zucchini, minced garlic, shredded mozzarella, grated Parmesan, egg, bread crumbs, salt, black pepper, and dried oregano. Mix until well combined.
Using a spoon, form small bite-sized patties from the mixture and place them on the prepared baking sheet, leaving some space between each bite.
If using, lightly spray the tops of the zucchini bites with olive oil spray for a crispier texture.
Bake in the preheated oven for 15-20 minutes, or until golden brown and cooked through. Flip halfway for even cooking.
Once done, remove from the oven and let them cool for a few minutes before serving.