Preheat oven to 425 degrees and line a large rimmed baking sheet with parchment paper.Note: Use 2 baking sheets if necessary. You want the brussels sprouts spread out so they get crispy and don't steam.
In a large bowl toss brussels sprouts with olive oil and garlic powder. Season with salt and pepper. Spread out on baking sheet.
Roast for 20 minutes.Meanwhile, stir together all bang bang sauce ingredients in a small bowl.
After 20 minutes, drizzle 1/4 cup of Bang Bang sauce over Brussels sprouts. Stir sprouts and return to oven fo 10 to 15 minutes or until browned.
Serve with remaining sauce for dipping.
Notes
Nutritional info is provided as an estimate only and will vary based on brands of products used.