Preheat the oven to 400°F (200°C) and prepare a baking sheet by greasing it with olive oil or lining it with parchment paper.

In a mixing bowl, whisk together olive oil, garlic powder, dried oregano, salt, and black pepper.

Slice the zucchini into rounds about half an inch thick, then toss them in the bowl with the olive oil mixture.

In another bowl, combine the shredded mozzarella, grated Parmesan, and breadcrumbs. Mix until evenly incorporated.

Dip each zucchini slice into the cheese-breadcrumb mixture, ensuring each slice is fully coated.

Arrange the coated zucchini slices in a single layer on the prepared baking sheet.

Bake in the preheated oven for 20-25 minutes until the cheese is bubbling and golden brown.

Remove from the oven and allow to cool for a few minutes. Garnish with fresh parsley if desired before serving.