The difference in Roger Chillingworth's appearance that surprised Hester was that he looked much older and more deformed compared to when she had last seen him. His face had become twisted and contorted, with a stooped posture that gave him a hunchbacked appearance. The reason he appeared different is likely due to the years of torment and obsession that had consumed him during his relentless pursuit of revenge against Hester and her lover, Arthur Dimmesdale. Chillingworth's deep-seated bitterness and constant dwelling on his desire for vengeance had taken a toll on his physical and mental well-being, resulting in his aged and deformed appearance. Additionally, his obsession and relentless pursuit of revenge may have led him to neglect his own health and well-being, further contributing to his physical deterioration.
