Something in kitchen quarrel you heard? “Not half lazy!” (7)
I believe the answer is:
spatula
'something in kitchen' is the definition.
(kitchen utensil)
'quarrel you heard? not half lazy' is the wordplay.
'quarrel' becomes 'spat' (spat is a kind of quarrel).
'you heard?' becomes 'U' (homophone of 'you').
'not half' means to take half the letters.
'lazy' halved is 'la'.
'spat'+'u'+'la'='SPATULA'
(Other definitions for spatula that I've seen before include "Kitchen utensil" , "Tool with broad flexible blade, found in kitchen" , "flat mixer" , "Implement for mixing/spreading" , "Food turner with flexible blade" .)