Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper for easy cleanup.
Peel and dice the sweet potato into small 0.5-inch cubes to ensure they roast quickly and evenly alongside the other ingredients.
Chop the broccoli into bite-sized florets and slice the red bell pepper into thin strips.
Place the ground beef in small, bite-sized crumbles on one side of the prepared sheet pan and arrange the vegetables in a single layer on the other side.
Drizzle the olive oil over the vegetables, then sprinkle the sea salt, black pepper, garlic powder, and dried oregano evenly across both the beef and the vegetables.
Toss the vegetables gently with a spatula to coat them in the oil and spices, ensuring the beef crumbles are also seasoned.
Roast in the oven for 15 to 18 minutes, tossing the vegetables halfway through, until the beef is fully cooked through and the vegetables are tender.
Transfer the roasted beef and vegetables into a bowl and serve immediately while warm.