hi bkcarlson and Linda
i would also try them on the raw diet of primarily ox cheek if you can get it or failing that raw chicken mince. they have been wormed etc so there will be no problems there.
where did you get them from? if you can find out a bit about what the previous people used to feed them?
how long have you had them?
travelling/settling in etc can take a while and its toll on them.
keep biscuits and water down as the day is long and i would go with the raw in the evening for them.i will take a few days to take effect then you should hopefully start to notice the difference.
bengals are prone to this. the slightest change to food/routine will set them off!
all the best
FG