PREHEAT oven to 450° F.
PLACE zucchini, eggplant, tomatoes and garlic on large rimmed baking sheet; toss with oil. Season with salt and pepper. Spread into a single layer (if needed, use 2 baking sheets).
ROAST for 15 to 18 minutes, stirring halfway through, until tender and golden.
MEANWHILE, prepare pasta according to package directions, reserving 1/2 cup cooking water. Place pasta back in saucepan. Add vegetables to pan along with reserved water; toss gently to coat. Heat over medium heat to warm through. Add basil; toss gently. Top with cheese. Garnish with oregano.