Preheat the oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Place the broccoli florets, chopped bell peppers, and sliced zucchini on the sheet, drizzling with 1 tsp of olive oil and seasoning with half of the salt and pepper.
Roast the vegetables for 18 minutes, tossing halfway through, until they are tender and show golden caramelized edges.
While the vegetables roast, heat the remaining 1 tsp of olive oil in a large skillet over medium-high heat.
Add the ground beef to the skillet, using a wooden spoon to break it into small crumbles as it browns.
Stir in the garlic powder, onion powder, and the remaining salt and pepper, cooking until the beef is fully browned and no pink remains.
Divide the roasted vegetables into bowls and top with a generous portion of the seasoned minced beef.
Finish the dish with a sprinkle of fresh chopped parsley for a bright, clean finish.