On the chin, anyway.
You know, sir, that's concerned me for a while. Years.
If surgical correction of some sort of bodily deformity--say, a cleft palate--is possible, it should be done. (It's not always possible, but if it is.....)
Any psychologist or medical professional will affirm that obvious deformities affect how we feel about ourselves, about how other people feel about us. And usually not in a good way. I suspect for example that the LynneSin primitive suffers from poor self-esteem, a lack of confidence in herself, and gets bothered by people staring at that awkward protuberance that juts out of her chin.
I don't know for sure, but I suspect the LynneSin primitive has a governmental job, meaning she enjoys Skippy-class medical insurance. I'm sure the policy's good enough that it'd cover removal of that grotesque bump on her chin. For the sake of her psychological well-being, it really needs to come off.