Big name in potato chips (4)
I believe the answer is:
lays
'big name in potato chips' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for lays that I've seen before include "Produces an egg" , "Minstrel's melodies" , "Sets down the old songs" , "Puts down; songs" , "Puts down the old ballads" .)