Begin by bringing a large pot of salted water to a rolling boil. Once boiling, add the rotini pasta and cook according to the package instructions, typically about 10-11 minutes.

After the pasta is cooked, carefully drain it in a colander and rinse it under cold running water to stop the cooking process.

In a large mixing bowl, combine the Italian dressing, freshly squeezed lemon juice, and grated Parmesan cheese. Add the chopped parsley, garlic powder, kosher salt, black pepper, and onion powder.

Gently add the cooled rotini pasta to the dressing mixture. Stir to ensure that every piece is evenly coated.

For the best flavor, cover the bowl tightly and refrigerate the pasta salad for at least 2 hours.

Once chilled, give the salad a gentle stir before serving to redistribute the dressing.