Bring a large pot of salted water to a boil. Add the pasta and cook until al dente, about 8-10 minutes, then drain and rinse in cold water.
In a large bowl, combine the cooked pasta, tomatoes, bell pepper, olives, and onion.
In a small bowl, whisk together the Italian dressing, Parmesan cheese, Italian seasoning, salt, and pepper. Pour the dressing over the pasta and vegetables and mix until everything is evenly coated.
Serve the pasta salad cold or at room temperature.
Interesting Facts
This pasta salad can be made ahead of time and stored in the refrigerator for up to 3 days.
Feel free to add other vegetables like broccoli, zucchini, or carrots to the salad.
You can switch up the dressing and use ranch, Greek, or balsamic vinaigrette instead.