My Sweet Pea lost a lot of weight after her worst seizures. Her appetite comes and goes that's why I recommend crop feeding your chicken to make sure she gets proper nutrition, at least until her appetite comes back. Of course Sweet Pea is blind so it is even harder for her to get all she needs...
I forgot to mention if you discover your chicken has epilepsy or having seizures I would recommend isolating them until you know what is going on. And keep them seperated until you know for sure your chicken will not seize again. My healthy chickens would attack Sweet Pea almost immediately if...
Chickens can have epilepsy. Their seizures have distinct phases starting with increased alertness followed by dorsiflexion and rotation of the head and neck. Wings extended and downward they lose the ability to stand then begin to thrash and tumble. They may also go rigid and then become limp...