Preheat the oven to 375°F (190°C).
In a large skillet, heat olive oil over medium heat and sauté the minced garlic for about 1 minute until fragrant.
Add the sliced zucchini to the skillet and cook for about 5–7 minutes, until slightly softened.
Stir in the chickpeas, dried oregano, salt, and pepper, cooking for another 2 minutes to combine the flavors.
In a large mixing bowl, combine the sautéed zucchini and chickpea mixture with mozzarella and half of the Parmesan cheese.
Transfer the mixture into a greased baking dish, smoothing it evenly.
Top the mixture with breadcrumbs and the remaining Parmesan cheese.
Bake for 25–30 minutes until the top is golden and bubbly.
Let it cool for a few minutes before serving; this ensures that the layers set.