Boil the pasta according to the package instructions until cooked to al dente. Drain. Rinse under cold water to stop the cooking process.
While the pasta is cooking, chop the cherry tomatoes, cucumber, bell pepper, onion, and Kalamata olives.
In a small bowl, whisk together the olive oil, red wine vinegar, Dijon mustard, dried oregano, salt, and pepper.
In a large bowl, combine the cooked pasta, vegetables, and olives. Drizzle the dressing over the salad and mix to combine.
Fold in the crumbled feta cheese and chopped herbs.
Let the salad sit in the refrigerator for at least 30 minutes to allow the flavors to meld.
Refrigerate any leftovers in an airtight container.