Lord penning pages for the season (6)
I believe the answer is:
pepper
'season' is the definition.
(I know that pepper is a more specific form of the action spice)
'lord penning pages' is the wordplay.
'lord' becomes 'peer' (peer is a kind of lord).
'penning' means one lot of letters goes inside another.
'pages' becomes 'pp' (an abbreviation for page written twice).
'peer' going around 'pp' is 'PEPPER'.
'for the' acts as a link.
(Other definitions for pepper that I've seen before include "Pungent condiment" , "Hot spice" , "hit by gunshot" , "Pungent spice" , "Name of Band Sergeant" .)