Asian leaves king cutting poor chap with call for attention (3,4)
I believe the answer is:
pak-choi
'asian leaves' is the definition.
(leafy vegetable)
'king cutting poor chap with call for attention' is the wordplay.
'king' becomes 'K' (abbreviation for king in chess).
'cutting' indicates putting letters inside (some letters cut their way into a word).
'poor' indicates anagramming the letters.
'with' is a charade indicator (letters next to each other).
'call for attention' becomes 'oi' ('oi' is used to attract someone's attention).
'chap' is an anagram of 'pach'.
'k' inserted inside 'pach' is 'pakch'.
'pakch'+'oi'='PAK-CHOI'
(Other definitions for pak-choi that I've seen before include "Chinese vegetable with white stalks and dark green leaves" , "Chinese white cabbage" , "Leafy green Chinese vegetable" .)