Preheat the oven to 375°F (190°C).
Wash the zucchinis and cut them into 1/4-inch thick slices.
Arrange the zucchini slices in a single layer on a baking sheet.
Drizzle olive oil over the zucchini and sprinkle with garlic powder, oregano, salt, and pepper.
Toss the zucchini slices to ensure even coating.
Top the zucchini with halved cherry tomatoes.
Sprinkle shredded mozzarella cheese evenly over the zucchini.
Add grated Parmesan cheese on top for extra flavor.
Bake in the preheated oven for 25 minutes or until the cheese is bubbly and golden.
Remove from the oven and let it cool for a few minutes before serving.