Spicy snack (5)
I believe the answer is:
nacho
'spicy snack' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for nacho that I've seen before include "Nibble" , "Small piece of tortilla with a topping" , "part of a snack?" , "Mexican food item" , "Tortilla chip served with savoury toppings" .)