Clean the brussels sprouts by soaking them in cold water. Using the slicing attachment of the food processor, slice the brussel sprouts into thin rounds. If you don’t have a food processor, you can do this by hand with a sharp knife.
Transfer the brussels sprouts and chopped garlic to a sheet pan. Drizzle with olive oil and season with salt to taste. There’s salt in the sriracha, so don’t go overboard.
In a small bowl, mix together 3 tablespoons honey, 2 tablespoons sriracha, and 3 tablespoons chili oil. You can adjust the amounts to taste if you like your food more or less spicy. Toss the brussels sprouts with the sauce and spread in a single layer.
Roast at 450F for 15-20 minutes, finishing them under the broiler for 1-2 minutes if they need crisping further. Finish with another drizzle of chili oil (optional), and serve!