Preheat oven to 375°F (190°C). Sauté onion and carrot in oil for 4–5 minutes. Add garlic, tomatoes, red peppers, herbes de Provence, salt, and pepper. Simmer 10 minutes.
Blend sauce lightly and spread in skillet.
Thinly slice vegetables and arrange in a circular pattern over the sauce.
Mix herb dressing and drizzle over vegetables.
Cover and bake for 40 minutes. Uncover and bake for 20 minutes until tender and golden.