Wash Brussels sprouts, pat completely dry, trim ends, remove loose leaves, and slice in half
Toss Brussels sprouts with olive oil, salt, and black pepper
Arrange cut-side down on a baking sheet and roast at 425°F (220°C) for 20–25 minutes, flipping once, until golden and crispy
While sprouts cook, combine sweet chili sauce, soy sauce, honey, vinegar, sriracha, sesame oil, and garlic in a saucepan
Simmer glaze over medium heat for 2–3 minutes, stirring, until slightly thickened
Transfer hot Brussels sprouts to a bowl, pour glaze over them, and toss quickly to coat
Garnish if desired and serve immediately