Thank you for posting your question. Yes.....you can create a chin cleft or enhance a pre-existing cleft in the chin with a minor surgical procedure. I typically perform these procedures here in the office under local anesthetic. Downtime is minimal. Locate a Plastic Surgeon, Board...
A protruding chin like yours has both bone and soft tissue excess. Your chin reduction is best done from a submental approach to remove both excessive bone and the excessive chin pad soft tissue that will result. A chin reduction can be combined with a rhinoplasty during the same procedure.
In terms of aesthetics, I think that you should focus on the nose first.You chin is strong but not unflattering.Further, chin reduction reduction is not done by most plastic surgeons since its hard to deliver great results.