Bring water to a boil in a medium saucepan; gradually stir in couscous. Remove from heat; let stand, covered, minutes. Fluff with a fork. Combine couscous, tomato, and next 4 ingredients in a large bowl, and toss well.
Combine lemon juice and next 4 ingredients; stir well with a wire whisk. Pour over couscous mixture; toss well. Yield: 8 servings (serving size: 1 cup).
Per serving: 144 Calories; 4g Fat (23% calories from fat); 4g Protein; 24g Carbohydrate; 0mg Cholesterol; 278mg Sodium