Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper.
Place the broccoli florets, sliced zucchini, and chopped red bell pepper onto the baking sheet.
Drizzle the vegetables with olive oil and sprinkle with sea salt and black pepper, tossing well to coat evenly.
Spread the vegetables in a single layer and roast for 18-20 minutes until tender and the edges are slightly charred.
While the vegetables are roasting, heat a large non-stick skillet over medium-high heat.
Add the ground beef to the skillet, breaking it into small crumbles with a wooden spoon or spatula.
Season the beef with garlic powder and onion powder, cooking until it is browned and no longer pink.
Once the beef is cooked, drain any excess liquid or fat from the skillet.
Remove the roasted vegetables from the oven and add them directly into the skillet with the beef.
Toss everything together for 1-2 minutes to combine the flavors and serve immediately.