Combine all of the ingredients in a jar and shake vigorously to combine. Store in the refrigerator until ready to use.
For the salad:
Cook the rotini in salted water according to package directions. Drain and rinse under cool water.
Place the pasta in a large bowl and add the salami, pepperoni, bell pepper, cherry tomatoes, red onion, olives, parsley and mozzarella balls. Pour the dressing over the pasta mixture and toss to coat. Season with salt and pepper to taste. Salad can be made up to 4 hours in advance.