In a bowl, stir together olive oil, balsamic vinegar, garlic, basil, oregano, salt and pepper. Stir in zucchini, squash, eggplant and red pepper and toss to coat. Heat cast iron grill pan over high heat. Grill vegetables until tender. Toss arugula and romaine leaves with remain vinaigrette mixture in bowl. Arrange leaves on platter and top with grilled vegetables. Top with Parmesan shavings.