Preheat the Oven: Preheat your oven to 425°F (220°C) and line a large baking sheet with parchment paper or lightly grease it with olive oil.

Prepare the Zucchini: Slice the zucchini or summer squash into 1/4-inch thick rounds or wedges, depending on your preference.

Season the Zucchini: In a large mixing bowl, toss the zucchini slices with olive oil, garlic powder, kosher salt, and freshly ground black pepper until they are evenly coated.

Add Parmesan Cheese: Sprinkle the freshly grated Parmesan cheese over the zucchini slices and gently toss them again to ensure the cheese is evenly distributed.

Roast the Zucchini: Arrange the zucchini slices in a single layer on the prepared baking sheet, making sure they are not overlapping. Roast in the preheated oven for 15-20 minutes, or until the zucchini is tender and the Parmesan has turned golden brown.

Serve: Remove the zucchini from the oven and let it cool for a couple of minutes. Serve hot as a side dish with your favorite main course, or enjoy them on their own as a healthy snack.