01 - Bring a large pot of salted water to a boil. Cook the short pasta according to package directions until al dente. Drain and rinse under cold running water until completely cooled. Set aside.
02 - In a large mixing bowl, toss together the cooled pasta, sliced sun-dried tomatoes, halved cherry tomatoes, thinly sliced red onion, halved Kalamata olives, diced cucumber, chopped basil, and chopped parsley.
03 - In a small bowl, whisk together the extra virgin olive oil, red wine vinegar, minced garlic, Dijon mustard, dried oregano, salt, and pepper until emulsified and smooth.
04 - Pour the prepared dressing over the pasta and vegetable mixture. Toss thoroughly until every component is evenly coated with the dressing.
05 - Gently fold in the crumbled feta cheese, if using, taking care not to break it down too much. Taste and adjust the seasoning with additional salt and pepper as needed.
06 - Refrigerate the salad for at least 30 minutes before serving to allow the flavors to meld. Alternatively, serve immediately at room temperature.