Chew meal, having changed starter (5)
I believe the answer is:
munch
'chew' is the definition.
(munching is a kind of chewing)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for munch that I've seen before include "Chew; Norwegian artist" , "who put one screaming on the canvas?" , "Norwegian painter" , "Chomp" , "Eat steadily; Norw. artist" .)