Cook the 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 olive oil, red wine vinegar, oregano, salt, and black pepper.

Pour the dressing over the pasta salad and toss to combine. Add feta cheese and olives if using.

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