I thought I might piggy-back on this thread.
On our next visit to Japan, we'll be taking my mother-in-law who only eats chicken (i.e. she doesn't eat pork or beef). Based on our prior trips, we know that chicken dishes can be quite difficult to find as pork appears to be the most common type of meat in Japan.
Does anyone know of Japanese "fast food" restaurants which have chicken dishes? Things like chicken curry (instead of pork curry) or really any kind of chicken and rice or chicken and vegetable meal (i.e. not chicken burgers from KFC, although that will probably do in a pinch).