Toss first 7 ingredients together in a large bowl. Place vegetables on a cookie sheet, sprayed with cooking spray, and sprinkle with sea salt and pepper. Bake the vegetables at 350°F/180°C for 30-45 minutes or until done. When done, sprinkle with Parmesan cheese (optional). This recipe can also be used during grilling season - thread vegetables on metal skewers. Grill until crisp and tender.