Tortellini Salad with Zucchini and Peas

pkg. refrigerated whole-wheat 3-cheese tortellini (such as Buitoni)

frozen peas

medium zucchini

olive oil, divided

garlic cloves, minced

grated lemon rind plus 1 Tbsp. fresh lemon juice

kosher salt

freshly ground black pepper

Small fresh basil leaves (optional)