Used to be part of the LGBT community, which is quite spicy (6)
I believe the answer is:
wasabi
'which is quite spicy' is the definition.
(plant paste used in Japanese cuisine)
'used to be part of the lgbt community' is the wordplay.
'used to be' becomes 'was' (I've seen this before).
'part of the lgbt community' becomes 'a bi' (a bisexual person).
'was'+'abi'='WASABI'
(Other definitions for wasabi that I've seen before include "Pungent green root used in Japanese cookery" , "Sushi condiment" , "Flavouring used in Japanese cuisine" , "Strong-tasting Japanese paste" , "Hollyhock" .)