Compelling chap to eat rice crackers (8)
I believe the answer is:
coercive
'compelling' is the definition.
Both the definition and answer are adjectives. Perhaps you can see a link between them that I don't see?
'chap to eat rice crackers' is the wordplay.
'chap' becomes 'cove' (British slang term).
'to eat' is an insertion indicator.
'crackers' indicates anagramming the letters (informal term for mad).
'rice' is an anagram of 'erci'.
'cove' going around 'erci' is 'COERCIVE'.
Can you help me to learn more?
(Other definitions for coercive that I've seen before include "Using threat or force" , "Forceful or threatening" , "Threatening or compelling" , "Using compulsion" .)