In large mixing bowl combine chicken, celery, grapes, vinegar, almonds, mayonnaise, salt, pepper and parsley. Stir to combine.
2 1/2 cups cooked chicken, 1 cup chopped celery, 1 cup sliced or halved purple grapes, 1 dash white vinegar, 1/2 cup sliced toasted almonds, 1 Tbsp. parsley flakes, 1 cup mayonnaise, 1 tsp. Salt, 1 tsp. pepper