Chucking away soggy food, about to stuff face (8)
I believe the answer is:
disposal
'chucking away' is the definition.
(chucking something away is disposing of it)
'soggy food about to stuff face' is the wordplay.
'soggy food' becomes 'sops' (a sop is a piece of bread dipped in sauce).
'about' says the letters should be written backwards.
'to stuff' indicates putting letters inside.
'face' becomes 'dial' (face of a clock).
'sops' in reverse letter order is 'spos'.
'spos' placed inside 'dial' is 'DISPOSAL'.
(Other definitions for disposal that I've seen before include "Scrapping" , "Riddance" , "Deployment - management" , "Availability for use" , "arrangement" .)