The most common and most likely answer to this crossword clue is the 3 plus 7 letter word HOT DINNERS
I've seen this crossword clue in The Guardian
H
O
T
D
I
N
N
E
R
S
Buddy explains!
The straight part
We know that "Food critics have had more of them than you" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case food critics have had more of them than you = hot dinners.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.