Add zucchini, tomatoes, parsley, and feta, and toss to combine. Add more of what you think it needs; I like to go heavy on the feta! Squeeze in a little more lemon juice/drizzle more olive oil if it needs more moisture.
Cover in plastic wrap for at least a couple of hours. Pasta is best when chilled for a few hours before serving.
*Note: Add grilled shrimp, grilled chicken, or grilled flank steak if you need a little protein.