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

In a large mixing bowl, combine the cooled pasta, cherry tomatoes, cucumber, bell pepper, and red onion.

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

Pour the dressing over the pasta salad and toss to combine. If desired, add feta cheese and black olives.

Chill in the refrigerator for at least 30 minutes before serving.