It appears as if this nodule needs to be surgically excised. It is difficult to tell exactly from the photo provided. Please find a plastic surgeon in your area who has experience with facial surgery and cosmetic repairs.
An excision would remove this.
It appears that an in office excision of the area would solve the problem as long as there is not an underlying issue such as a salivary gland that is causing this lump.
How do I get rid of this "lobe" on my jawline?
Not real sure of the sub mental/jaw issue unless seen in person.. Appears as an easy local anesthesia repair..//