Cheesy Vegetable Pasta

Name: Cheesy Vegetable Pasta
Ingredients: 2 tablespoons olive oil; 1 tablespoon balsamic vinegar; kosher salt; freshly ground black pepper; 2 medium zucchini (about 1 pound), halved lengthwise; 1 medium eggplant (about 1 pound), halved lengthwise; 1 large onion, peeled and quartered; ½ pound ziti or penne; 2 large cloves garlic, minced; 1 teaspoon dried oregano; ½ teaspoon dried mint; 1 large tomato, chopped; 4 ounces Feta cheese, crumbled (about 1/2 cup); 1 cup prepared tomato sauce; ½ teaspoon crushed red pepper flakes; 8 ounces mozzarella, shredded