Steps
1. Preheat your oven to 400°F (200°C).
2. Slice the zucchini into 1/4-inch thick rounds and place them on a baking sheet lined with parchment paper.
3. Season the zucchini rounds with salt, pepper, garlic powder, and oregano.
4. Spread a small amount of marinara sauce on each zucchini round.
5. Top each round with shredded mozzarella cheese and a slice of pepperoni.
6. Bake in the preheated oven for about 15-20 minutes or until the cheese is melted and bubbly.
7. Remove from the oven and let cool slightly before serving.