Preheat oven to 425°F; line baking sheet with parchment paper.
Toss zucchini with oil, seasonings, and parmesan in a large bowl.
Arrange in a single layer on the baking sheet.
Roast 12–15 minutes until tender and golden brown.
Broil for 1–2 minutes if extra crispness is desired.
Garnish with parsley and serve warm.
Notes
Use freshly grated parmesan if possible; pre-shredded cheese often has anti-caking agents that hinder melting.Pat zucchini rounds dry with paper towels before seasoning for a better crust.If slices are uneven, tuck smaller ones toward the center of the pan so they don't burn.Best enjoyed fresh; reheat in an air fryer or toaster oven for best texture.