Host ate nuts in uncomfortable position (3,4)
I believe the answer is:
hot seat
'uncomfortable position' is the definition.
(I've seen this in another clue)
'host ate nuts' is the wordplay.
'nuts' indicates anagramming the letters (nuts can mean crazy).
'host'+'ate'='hostate'
'hostate' is an anagram of 'HOT SEAT'.
'in' is the link.
(Other definitions for hot seat that I've seen before include "Position of full responsibility (colloq.)" , "new constituency" , "Chair for person with difficult responsibility" , "Position carrying full responsibility" , "Situation of responsibility or danger" .)