Hobby? I’m covered in glue (7)
I believe the answer is:
pastime
'hobby?' is the definition.
(hobby is a kind of pastime)
'i'm covered in glue' is the wordplay.
'covered in' is an insertion indicator.
'glue' becomes 'paste' (synonyms).
'im' going inside 'paste' is 'PASTIME'.
(Other definitions for pastime that I've seen before include "diversion" , "Leisure activity" , "Hobby - recreation" , "Leisure pursuit" , "relaxation" .)