Place eggplant, onion, tomatoes and zucchini in a large bowl. Drizzle with 2 tablespoons dressing. Transfer to a 15x10x1-inch baking pan. Roast in a 400°F oven for 25 minutes or until vegetables are tender, stirring once or twice.
Cut Hoagie Rolls lengthwise. Brush cut sides with olive oil. Lightly toast roll in hot oven, about 8 minutes. Rub cut surface of rolls with garlic clove. Spoon roasted vegetables onto roll. Top with feta cheese, oregano. Drizzle with additional dressing.
Tip: To make Panera clean recipes at home, follow these recipes, use the ingredients listed and for more information about Panera clean, go to www.panerabread.com/cleanfood for our No No list.