Preheat the oven to 350 degrees F.

Halve each cherry tomato. Chop the bell peppers. Slice the zucchini into coins. Quarter the onion and separate the layers. Crush and peel the garlic.

Place all veg on a large rimed baking sheet. Drizzle with olive oil. Season with salt and pepper.

Bake in the preheated oven until vegetables are lightly browned and easily pierced with a fork. This may take as little as 20 minutes or as much as 40.