Preheat oven to 400°F (200°C). Line a large baking sheet with parchment paper.
Trim and halve the Brussels sprouts. Toss them with olive oil, salt, and pepper on the prepared baking sheet. Arrange cut-side down in a single layer.
Roast for 20-25 minutes until the Brussels sprouts are golden-brown and caramelized on the edges.
While the sprouts are roasting, whisk together the honey, sriracha, soy sauce, and minced garlic in a large bowl.
Remove the roasted Brussels sprouts from the oven and transfer them to the bowl with the honey sriracha glaze. Toss until every sprout is evenly coated.
Return the glazed Brussels sprouts to the baking sheet and bake for an additional 5 minutes to allow the glaze to caramelize.
Transfer to a serving dish and garnish with sesame seeds and sliced green onions. Serve immediately.