Preheat your oven to 425°F (220°C) and lightly grease a 9x13 casserole dish with olive oil.

In a small bowl, combine the buffalo sauce, olive oil, garlic powder, onion powder, salt, and black pepper. Set aside half of this mixture for later.

In a large mixing bowl, toss the peeled and chopped sweet potatoes with half of the buffalo sauce mixture.

Spread the coated sweet potatoes in the prepared baking dish and roast for 30 minutes, flipping halfway through.

In the mixing bowl, add chicken breasts, chopped broccoli, and the remaining buffalo sauce mixture. Toss until well coated.

Layer the chicken and broccoli mixture over the roasted sweet potatoes and bake for an additional 20-25 minutes.

Once fully cooked, sprinkle shredded cheddar cheese on top and broil for 3-5 minutes until melted and bubbly.

Remove from oven, let cool for 5 minutes, and garnish with chopped green onions before serving.