Preheat the oven to 425°F.

Combine olive oil, lemon zest, garlic, salt, onion powder, black pepper, parmesan, and bread crumbs in a bowl. Add in Brussels sprouts and toss until evenly coated.

Prep a sheet pan with parchment paper. Place each Brussels sprout facedown on the pan. Use a spatula to scrape remaining parmesan or breadcrumbs from the bowl and add to top of Brussels sprouts.

Roast for 15 minutes. Flip and roast for another 15 minutes. Add your serving bowl to the oven in the last 30 seconds to help keep your Brussels sprouts extra warm for serving. Transfer the Brussels sprouts to the serving dish and sprinkle remaining parmesan and breadcrumbs from the pan on top. Serve and enjoy!