They are not replacing potatoes with lentils/other legumes, but they decreased the amount of potato.
I'm on the fence about it because they are also increasing the price, which is annoying, but I'll probably end up sticking with Acana. Biscuit has done really well on Ranchlands.
Biscuit does best on chicken-free food, so that limits the options a bit. I was thinking about trying Fromm Four Star, Solid Gold Barking at the Moon, or Nature's Variety Instinct.