Bring water to a boil and add couscous. Remove from heat and let it sit covered for 5 minutes.

Fluff couscous with a fork and let it cool.

In a large mixing bowl, combine cooled couscous, cherry tomatoes, cucumber, red onion, parsley, and feta cheese.

In a small bowl, whisk together lemon juice, olive oil, salt, and pepper.

Pour dressing over the salad and toss to combine.

Serve chilled or at room temperature.