Add 1 teaspoon garlic powder, ½ teaspoon onion powder, 1 teaspoon black pepper powder, ½ teaspoon salt, ½ teaspoon red pepper flakes, 2 tablespoon grated parmesan cheese, and zucchini pieces to a medium mixing bowl.
Cut the zucchini into even bite-sized (½-inch) pieces and set them aside. I have cut the zucchini into a half moon shape. There is no need to peel the skin.
Toss to coat the zucchini with the spices.
Add 2 tablespoon extra virgin olive oil to the bowl and toss well.
Preheat the air fryer to 400F (200C) for 5 minutes. Transfer half of the zucchini slices to the air fryer basket and spread evenly.
Air fry for 6-8 minutes till it looks nicely roasted and is cooked. You can shake the basket midway for even cooking. Air fry the remaining zucchini in the same way. The second batch might take a minute less to cook.