1.) In a small saucepan bring broth and cumin seeds to boiling. Stir in couscous. Return to boiling; remove from heat. Cover and let stand 15 minutes or until broth is absorbed. Fluff with a fork. Season with salt and pepper.
2.) Divide lettuce, chickpeas, cucumber, tomatoes, onion, and couscous among eight bowls. Sprinkle with parsley and lemon juice, and drizzle with Tahini Dipping Sauce.