Would filler work well on a very mildly recessed chin and jowls? (photos)

I'm only 20 and recently my facial skin has dropped, leaving me with jowls and an emphasis on my slightly off chin. I already know with my luck that a chin implant would only cause irritation (I have intermittent inflammation and my body doesn't heal itself well). I want a minor enhancement to my chin and for my jawline to be restored. Is this possible? (I am not considering surgery for either of these problems and would rather keep up with fillers as they last long in my skin).