Chubby little boy, a tot unfortunately scoffing second helping? (8)
I believe the answer is:
amoretto
'chubby little boy' is the definition.
(representation of Cupid)
'a tot unfortunately scoffing second helping?' is the wordplay.
'unfortunately' indicates anagramming the letters.
'scoffing' indicates putting letters inside.
'second helping?' becomes 'more'.
'tot' with letters rearranged gives 'tto'.
'tto' enclosing 'more' is 'moretto'.
'a'+'moretto'='AMORETTO'
(Other definitions for amoretto that I've seen before include "lover boy" , "chubby naked boy" , "Almond liqueur" , "Cupid figure in art" , "Child put in the picture" .)