CLUCK! quest

I am having issues completing the quest "CLUCK!".

select * from mangos0.quest_template q where q.entry=3861;

It is being triggered by emoting "/chicken" repeatedly at chickens in Westfall. At some point the chicken becomes a quest giver. To complete the quest "CLUCK!" you need to have "Special Chicken Feed" in your inventory, which can be bought from "Farmer Saldean" in Westfall.

select * from mangos0.item_template i where i.entry=11109;

But for some reason it is not possible to complete the quest, even with the correct items in your inventory. I have attached a screenshot shoving the quest dialog and the item in the inventory.