Cook the penne pasta according to package instructions until al dente. Drain and rinse under cold water to cool.
In a large mixing bowl, combine the cooled penne pasta, cherry tomatoes, cucumber, red bell pepper, red onion, black olives, feta cheese, and parsley.
In a small bowl, whisk together the olive oil, red wine vinegar, dried oregano, salt, and pepper.
Pour the dressing over the pasta salad and toss gently to combine all ingredients evenly.
Cover the salad and refrigerate for at least 30 minutes to allow flavors to meld.
Serve chilled or at room temperature.