I agree that you don’t need it. Your chin may be slightly recessed but it’s definitely not surgery-worthy. A chin implant would look overdone at worst or make a barely noticeable improvement at best.

However, we shouldn’t spread false information. Men’s jaws don’t grow any larger after puberty. The researchers found reductions in the angles of the brow, nose, and upper jaw bones. The length and height of the lower jaw decreased, as well.

You might have one growth spurt left that will affect his bone structure, but that’s unlikely at this age... which is totally fine. You look amazing now, and I’m being 100% honest OP.