Spread romaine lettuce on a large serving platter. Evenly arrange green beans, potatoes, tomatoes, cucumber, olives and red onion over romaine. Sprinkle with seasoned chickpeas, chives, capers, salt and pepper. Serve Lemon Dijon Dressing on the side for drizzling. (Alternatively, you can toss all the ingredients together in a large salad bowl with the dressing to taste just before serving.)