Cook the pasta according to package instructions. Drain and rinse under cold water.
In a large bowl, combine the cooked pasta, cherry tomatoes, cucumber, and red onion.
Add the Kalamata olives and feta cheese to the bowl.
In a separate small bowl, whisk together the olive oil, red wine vinegar, and dried oregano.
Pour the dressing over the pasta salad mixture.
Toss everything gently to combine well.
Season with salt and pepper to taste.
Let the salad sit for 10 minutes to allow flavors to meld.
Serve chilled or at room temperature.
Garnish with fresh herbs if desired.