Cook the orzo: Cook the orzo in boiling, salted water according to package directions. Once the orzo is cooked, drain it in a fine-mesh sieve and rinse under cold water for about a minute, or until orzo is completely cool.
Make the salad: In a large bowl, combine the orzo, cucumber, red onion, and feta.
Make the dressing and finish the salad: In a small jar, shake together lemon juice, olive oil, parsley, dill, salt and pepper for 30 seconds or until completely emulsified. Pour the dressing over the salad and toss to coat. Serve chilled or at room temperature.