1. Boil Pasta: Cook the rotini or fusilli pasta according to package instructions until al dente. Drain and rinse under cold water to stop the cooking process. Set aside.
2. Prepare Vegetables: While the pasta cooks, wash and chop the cherry tomatoes, bell pepper, cucumber, and red onion. Set aside.
3. Slice Meats and Cheese: Cut the salami or pepperoni into strips and dice the mozzarella cheese. Place both in a large mixing bowl.
4. Combine Ingredients: In the same bowl with the meats and cheese, add the cooked pasta, chopped vegetables, and sliced olives.
5. Make Dressing: In a smaller bowl, whisk together mayonnaise, red wine vinegar, Italian seasoning, salt, and pepper until well combined.
6. Mix Salad: Pour the dressing over the pasta and ingredients in the mixing bowl. Gently toss everything together until evenly coated.
7. Chill: Cover the bowl with plastic wrap or transfer to an airtight container. Refrigerate for at least 30 minutes to allow the flavors to meld.
8. Garnish: Before serving, sprinkle fresh parsley over the salad for a pop of color and extra flavor.

Following these steps will lead you to an amazing Italian Grinder Pasta Salad that is delicious and visually stunning!