Vegetable that's somewhat crisp in a chilli (7)
I believe the answer is:
spinach
'vegetable' is the definition.
(spinach is a kind of vegetable)
'somewhat crisp in a chilli' is the wordplay.
'somewhat' says the answer is hidden in the clue.
'SPINACH' can be found hidden inside 'crisp in a chilli'.
'that's' is the link.
(Other definitions for spinach that I've seen before include "Dark green vegetable" , "Popeye's strength-giver" , "leaves on plate?" , "Some greens" , "Popeye the Sailor's favourite vegetable" .)