Chop vegetables and add them to the bowl of tortellini. Lightly stir until mixed well.
Mince 1 tablespoon Kalamata olives for the dressing, set aside. Combine remaining salad ingredients in a large bowl. Set aside.
In a pint sized mason jar, add salad dressing ingredients and minced olives. Be sure to crush oregano well to release the flavor. Shake mason jar until dressing is combined. Pour dressing over salad and gently toss until well coated.