Make a double batch of grilled vegetables and use leftovers to make Grilled Vegetable Sandwiches.
Place vegetables in large bowl. Mix oil, vinegar, rosemary, garlic powder, pepper and sea salt in small bowl. Pour over vegetables; toss well to coat
Place vegetables in grill basket, grill rack or thread onto skewers
Grill over medium heat about 10 minutes or until vegetables are tender, turning occasionally