Grilled Ratatouille

Name: Grilled Ratatouille
Ingredients: 2 zucchini, cut into quarters lengthwise; 2 yellow squash, cut into quarters lengthwise; 2 Japanese eggplant, halved lengthwise; 2 red bell peppers, stemmed, seeded and quartered; 2 yellow bell peppers, stemmed, seeded and quartered; 2 red onions, quartered; 1 pint cherry tomatoes; 1/2 cup olive oil, plus 2 tablespoons; Salt and freshly ground pepper; 4 cloves garlic, finely chopped; 2 tablespoons finely chopped fresh oregano leaves; 1/4 cup finely chopped flat-leaf parsley leaves