Great for a baby shower or summer snacks party. You can substitute either radicchio or iceberg lettuce for the hearts of romaine.
Whisk mayonnaise, chutney and lime juice in large bowl. Mix in chicken, walnuts, 2 tablespoons cilantro, celery and red bell pepper. (Chicken salad can be made 4 hours ahead. Cover and refrigerate.)
Place lettuce leaves on platter. Spoon 1 heaping tablespoonful chicken salad in center of each leaf. Sprinkle remaining 3 tablespoons of cilantro over and serve with lime wedges alongside.