Preheat the oven to 400 degrees. Brush a half-baking sheet with 1 tablespoon of olive oil.
Place the Brussels sprout halves in a bowl then drizzle with Parmesan cheese, olive oil, minced garlic, Italian seasoning, crushed red pepper flakes, and sea salt & freshly cracked pepper, to taste. Toss to coat evenly.
Try to scoop a bit of Parmesan cheese (in the bottom of the bowl) on the cut side of each Brussels sprout half then place them cut side down on the prepared baking sheet.
Bake for 20 minutes, turning the baking sheet halfway through baking, until golden brown and tender.
Use a thin spatula to remove each sprout from the baking sheet to preserve the Parmesan coating. Serve immediately. Enjoy!