Preheat the oven to 400°F. To a baking sheet or dish, add the chopped potato, onion, cauliflower, zucchini, and garlic. Drizzle on the olive oil and massage it into the vegetables with your hands. Add a pinch of salt and pepper.
2 large gold potatoes, ⅓ cup cauliflower florets, ½ a yellow onion, 5 garlic cloves, 2 tbsp olive oil, 1 large pinch salt, 1 large pinch pepper, 1 large zucchini