Cook orzo al dente per package instructions. Drain but DO NOT rinse with cold water.
Stir cucumbers, red pepper, onion, and kalamata olives into orzo.
Add all dressing ingredients into a small container with a lid and shake to mix thoroughly. Pour dressing into bowl with orzo and vegetables and toss to combine.
Refrigerate salad for at least 3 - 4 hours, preferably overnight.