Preheat the oven to 400 degrees F and line a cookie sheet with a silpat mat, parchment paper, or foil. Chop the zucchini, mushrooms, bell pepper, and cherry tomatoes. Place on the cookie sheet and drizzle 1 Tbsp of olive oil over the vegetables and mix well. Sprinkle garlic powder, onion powder, basil, oregano, salt, and pepper over the vegetables. Place in the oven and roast for 40 minutes.