Saint feeding unpleasant person a fried tortilla (7)
I believe the answer is:
tostada
'fried tortilla' is the definition.
(I've seen this in another clue)
'saint feeding unpleasant person a' is the wordplay.
'saint' becomes 'st' (abbreviation).
'feeding' indicates putting letters inside (one word is fed by another set of letters).
'unpleasant person' becomes 'toad' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'st' placed within 'toad' is 'tostad'.
'tostad'+'a'='TOSTADA'
Can you help me to learn more?
(Other definitions for tostada that I've seen before include "Mexican food" , "Mexican topped pancake" , "spicy food" , "Crisp 15 down" .)