Chewy artist? (5)

I believe the answer is:

munch

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'artist?' is the definition.
(painter Edvard Munch)

I cannot understand how the rest of the clue works.

(Other definitions for munch that I've seen before include "Painter of The Scream, d. 1944" , "He depicted" , "Chomp" , "who's popular in the gallery?" , "Chew steadily - "Scream" artist" .)

I've seen this clue in The Times.

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