Final answer:
When all their dinner companions are gathered around and looking on, Connie's chopstick performance may get worse while Izumi's performance may get better.
Step-by-step explanation:
When all their dinner companions are gathered around and looking on, Connie's and Izumi's chopstick performance will be affected. In this situation, Connie's performance is likely to get worse, while Izumi's performance may get better. This is because Connie, who is less familiar with using chopsticks, may feel more self-conscious and nervous with an audience, which can negatively impact her performance. On the other hand, Izumi, who has grown up using chopsticks, may feel more confident and comfortable, which could potentially improve her performance.