Curried Chicken Salad with chestnuts

1 1/2 cups cut-up cooked chicken 1 cup fresh seedless grapes , halved (optional) 1 (8 ounce) can water chestnuts , drained and chopped (optional) 1 (11 ounce)[...]

6 cups romaine lettuce , torn into bite-size pieces 1/2 cup fresh radish sprouts 8 ounces water chestnuts , sliced 1/2 cup thinly sliced green onion 1 medium[...]

1 (11 ounce) can mandarin orange sections , drained 3 cups cooked chicken (about 1 lb.) or 3 cups cooked turkey (about 1 lb.) 2 cups red seedless grapes ,[...]