Ziti With Roasted Zucchini

Name: Ziti With Roasted Zucchini
Ingredients: 2 pounds medium zucchini, trimmed, cut into 1/4-inch-thick rounds; 12 garlic cloves, peeled, halved; 8 large shallots, halved, thinly sliced; 7 tablespoons olive oil, divided; 1/2 teaspoon dried crushed red pepper; 2 1-pound boxes ziti, cooked, drained, 3/4 cup cooking liquid reserved; 1 cup chopped fresh basil, divided; 3/4 cup grated Pecorino Romano cheese