01 - Preheat the oven to 425°F. Line a baking sheet with parchment paper.
02 - In a large bowl, toss Brussels sprouts with olive oil, sea salt, black pepper, garlic powder, and red pepper flakes until evenly coated.
03 - Spread Brussels sprouts in a single layer on the baking sheet, cut side down to maximize caramelization.
04 - Roast for 20 to 25 minutes, stirring or shaking the pan halfway through, until golden brown and crisp on the edges.
05 - Remove from oven and drizzle with balsamic glaze or lemon juice if desired. Serve immediately.