Bring water and 1/2 teaspoon of the Seasoning to boil in medium saucepan on high heat. Stir in couscous. Cover. Remove from heat. Let stand 5 minutes. Fluff with fork.
Spoon couscous into large bowl. Cool about 10 minutes, tossing occasionally with fork. Add celery, bell pepper and onion; toss to mix well.
Mix lemon juice, oil, honey and remaining 2 teaspoons Seasoning in small bowl with wire whisk until well blended. Add to couscous mixture; toss to coat well. Serve at room temperature or refrigerate until ready to serve.