Preheat your oven to 400°F (200°C) to roast the broccoli.
In a bowl, combine the sesame oil, sriracha sauce, minced garlic, and honey to prepare the spicy marinade.
Add the chicken breast to the bowl, ensuring it is well coated with the marinade. Let it sit for about 10 minutes to absorb the flavors.
While the chicken marinates, toss the broccoli in a small amount of extra olive oil (optional), salt, and pepper, then spread it out on a baking tray.
Place the broccoli in the oven and roast for about 15-20 minutes, or until tender and lightly browned.
Meanwhile, heat a non-stick skillet over medium-high heat. Sear the marinated chicken breast for about 5-6 minutes per side, or until fully cooked and slightly caramelized.
Sprinkle the chicken with sesame seeds during the last minute of cooking.
Plate the sliced chicken alongside the roasted broccoli and drizzle any remaining pan juices over the top.
Serve immediately and enjoy your spicy, savory meal.