Deliverer in food hall with one nacho regularly missing (7)
I believe the answer is:
messiah
'deliverer' is the definition.
(messiah is a kind of deliverer)
'food hall with one nacho regularly missing' is the wordplay.
'food hall' becomes 'messi' (I can't justify this - if you can you should believe this answer much more).
'with' means one lot of letters go next to another.
'regularly missing' means one should take alternating letters (letters removed at regular intervals).
The alternating letters of 'nacho' are 'ah'.
'messi'+'ah'='MESSIAH'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for messiah that I've seen before include "Expected deliverer of the Jews" , "Inspirational liberator" , "Jesus?" , "Choral work often performed at Christmas" , "The Promised One" .)