Is there one procedure that could be done to correct my tight smile muscles and protruding chin? (photo)

Hi yes looks like you don't like the prominence of the chin and in addition you have some muscle straining from the anatomically unique position of the chin (too forward). I think a genioplasty to reposition the chin bone and the muscle at the same time will help. I am not quite sure about the smile part-you have to be more specific on what exactly is bothering you. Is it because your lower teeth is covered when you smile when you mean it goes upward?

Facial aesthetics are primarily determined by facial skeletal structure.
Soft tissue coverage tends to be fairly consistent from person to person and what gives each person their unique facial appearance whether desirable or not so much tends to be more based on bone structure.
This is especially true for young people.
It’s normal for the chin to project more when smiling Guy at A.
I don’t think you have abnormal muscles of facial expression.
I think this is simply your facial anatomy, which in the end is primarily determined by bone structure guided
Issues related to the lower, 1/3 to the face are therefore usually determine by the shape and size of the mandible.
We do not assess the chin out of context.
It needs to be assessed in relationship to the rest of the man will, and with the maxilla or entire face.
I appreciate the desire to maintain an anonymity, but full proper facial pictures are always needed when making an assessment for this part of the phase.
Everything needs to be assessed in context to surrounding areas.
An excessively large or small chin is only disproportionate based on the surrounding structures.
Consider consulting with oral surgeons in your community.
Best,
Mats Hagstrom MD