How can I talk to my girlfriend about her chewing sounds without hurting her feelings?

My girlfriend and I are in the early stages of our relationship, and I’ve noticed that she tends to chew a bit loudly while eating and it’s starting to bother me during meals. I really don’t want to offend her or make her feel self-conscious, especially since we’re still getting to know each other. How can I bring this up in a way that’s gentle and respectful? Has anyone else dealt with a similar situation in a new relationship?