In a medium bowl combine chicken, dried cherries, pecans, and celery. For dressing, in a small bowl combine mayonnaise, sour cream, lemon juice, honey, and rosemary. Add dressing to chicken mixture; stir gently to coat.
If desired, cover and chill for up to 24 hours. Arrange lettuce leaves and apple slices on a serving platter. Top with chicken mixture. If desired, garnish with red grapes.