Melt the butter in a small pan. Add the curry powder, stir and cook for a minute. Add the sherry and blend in. Remove from stove and cool slightly.
Cut the chicken into bite-sized pieces and place in a salad bowl. Add the curry-sherry mixture, mayonnaise, green onions, salt, and pepper, and mix well with the chicken. Chill until serving time. Garnish with a few sprigs of parsley.