Protruded mouth and a weak chin! Any suggestions? (photos)

Consider extractions: This will create room to retract your protrusive teeth giving a softer profile.  It "may" accentuate your chin more as well.  Granted, I don't have any idea how your teeth are fitting together nor X-rays, but this might be an alternative to surgery.  Surgery: This might still involve extractions to reduce protrusion, but it would allow your lower jaw to move forward.  Again, just basing this off photos so don't take it as gospel.In either scenario I would highly recommend seeing an orthodontist because these are irreversible procedures so you want a specialist.

Without seeing photos of your teeth biting, it is impossible to say. However, if you are able to be treated with Invisalign. a chin implant is strongly suggested at treatments end.