Step 1 Cook the shell pasta to al dente according to the manufacturer's directions, then rinse under cold running water to cool completely.
Step 2 In a large bowl, combine the pasta, lemon zest, thawed peas, cut zucchini, tomatoes, basil and Parmesan. Drizzle over olive oil to coat and toss gently. The salad will keep up to 2 days, covered and refrigerated.