Boil water in a large pot and cook the rotini pasta according to the package directions until al dente. Drain and rinse under cold water.
In a large mixing bowl, add the cooked rotini, cherry tomatoes, zucchini, red onion, green bell pepper, black olives, parmesan cheese, mozzarella cheese, salami, and chopped parsley. Stir gently to combine.
Cover the pasta salad and refrigerate for at least 4 hours before serving to allow flavors to meld.
Notes
Adjust the dressing to your preference, use fresh herbs for enhanced flavor, and choose quality ingredients for better taste.
Letting the salad marinate improves flavor, and it tastes best served cold.