I tried the chicken and not one of my cats would eat it!
Do you mean JWB? There isn't a chicken JWB, they do a turkey one but when I was googling for hypoallergenic food for Riley I found quite a few reviews that said the turkey one wasn't very palatable!
If you can get them on JWB there's big savings to be made by buying the 5 or 10kg sacks and the 2kg bags are often on 'buy more than one and get money off' type offers
Also, and I'm sure you know this, but introduce any new biccies veeeeeeeery slowly. I rushed putting them on the duck JWB and got runny bums, thankfully I posted on here and the advice was to go super slow with introducing it which worked a treat.