Cook the rotini pasta according to package instructions. Drain and rinse under cold water to cool.

In a large mixing bowl, combine the cooked pasta, cherry tomatoes, cucumber, bell pepper, red onion, salami, black olives, and mozzarella cheese.

In a small bowl, whisk together the olive oil, red wine vinegar, Italian seasoning, minced garlic, salt, and black pepper.

Pour the dressing over the pasta salad and toss to combine. Adjust seasoning if necessary. Serve chilled or at room temperature.