Yes, I love any sounds he makes, especially since being a bun he's pretty quiet other than the thumping when he full out runs.
Besides the chewing, I have heard him purring while I was petting him and the other night he made a noise I can't describe other than sounding similar to a ferret chooking. He was making this noise while grooming himself. I heard him do it again this morning while I was petting him.
Every now and then when making pasta I will give my dog a long uncooked noodle because he likes them and I find it funny just how loud the crunching is.