In a medium saucepan, bring 1 1/2 cups of water to a boil. Stir in the couscous. Remove from the heat, cover, and let stand for 5 minutes. Uncover and fluff with a fork. Add the feta, tomatoes, olive oil, salt, pepper, olives, cucumbers and lemon juice. Toss until combined. Serve hot or at room temperature.
Nutritional Analysis (per serving): 190 calories; 6 grams total fat