Bring a large pot of water to a rolling boil and add the kosher salt.
Add the orzo and cook according to package directions until al dente, about 8 to 10 minutes.
Drain the orzo and rinse briefly with cool water to stop the cooking.
Transfer the cooled orzo to a large mixing bowl.
Add the cherry tomatoes, cucumber, red onion, kalamata olives, feta cheese, and parsley to the bowl.
In a small bowl, whisk together the olive oil, lemon juice, lemon zest, dried oregano, salt, and black pepper.
Pour the dressing over the orzo mixture.
Gently toss until everything is evenly coated.
Taste and adjust seasoning if needed.
Serve immediately or refrigerate for up to 24 hours before serving.