Protrusions or recession at sides/under lips or something else entirely? (photos)

I can't figure out if these are fat protrusions or chin bone recessions at the sides/under my lips or if it is something else entirely. I'm in my late 20s and have had major weight loss and major weight gain from diets, exercise, and lifestyle changes throughout my life. What do you think is going on in this area? What do I call it when speaking with a plastic surgeon? What would fix this? Thank you.

No doctor answers yet