Final answer:
Jim's feelings about Della after seeing her new haircut are not explicitly mentioned, but indications suggest that he may no longer find her as attractive.
Step-by-step explanation:
After discovering Della's new haircut, Jim's reaction is not explicitly mentioned in the given information. However, there are indications that Jim may no longer find Della as attractive as before. In the text, Della describes her haircut as "ugly as sin," and notices that Marjorie's mouth curves in mockery and Warren's eyes become cold. These reactions suggest that Jim's perception of Della's beauty may have been negatively affected by her new haircut.