Peas, carrots, etc are eaten by girl where most get chips (3,5)
I believe the answer is:
las vegas
'where most get chips' is the definition.
The answer is a location as well as being a singular noun. This is suggested by the definition.
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for las vegas that I've seen before include "Nevadan city" , "Gambling centre in USA" , "place in America" , "'City famous for gambling and excess (3,5)'" , "Nevada city famed for casinos" .)