Removing wrappers to use gas oven, Lloyd prepared food (7)
I believe the answer is:
saveloy
'prepared food' is the definition.
(type of sausage)
I don't understand how the rest of the clue works.
(Other definitions for saveloy that I've seen before include "Big sausage" , "Highly seasoned pork sausage - love, say (anag)" , "One using brains originally" , "Spicy sausage" , "Type of sausage" .)