Possible Clues:

• Facial feature of chubbier persons
• To much chin-chin may give one this
• Unflattering facial feature
• Could be unfit: primarily heavy with it?
• Only a fathead would say chin-chin before a drink
• 'Too much saying ''Chin, chin'' may lead to having this (6,4)'
• Unattractive feature in toast?
• Chewing gum could help prevent one
• Dublin Echo spread: 'Sagging flesh (his ’n' hers)'
• Feature of fat man that could be a clue to good health!