Preheat the oven to 400°F (200°C).

In a large mixing bowl, combine the sliced sausage, bell peppers, red onion, broccoli, and carrots.

Drizzle the olive oil over the sausage and vegetables.

Sprinkle the garlic powder, Italian seasoning, salt, and black pepper over the mixture.

Toss everything together until well coated.

Spread the sausage and vegetable mixture evenly on a sheet pan.

Bake in the preheated oven for 25-30 minutes, stirring halfway through, until the sausage is cooked through and the vegetables are tender.

Remove from the oven and let cool slightly before serving.