Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Peel the sweet potato and cut it into 1/2-inch cubes, then chop the red bell pepper into bite-sized pieces.
Place the sweet potato cubes, broccoli florets, and bell peppers on the baking sheet, drizzle with olive oil, and season with half of the salt, pepper, garlic powder, and onion powder.
Toss the vegetables to coat evenly and roast for 20-25 minutes, or until the sweet potatoes are tender and the broccoli edges are slightly charred.
While the vegetables roast, heat a large non-stick skillet over medium-high heat and add the ground beef.
Cook the beef, breaking it up with a spatula, until browned and cooked through, then drain any excess fat.
Season the beef with the remaining salt, pepper, garlic powder, and onion powder, stirring well to incorporate the flavors.
Divide the roasted vegetables into a bowl, top with the seasoned ground beef, and serve immediately.