I'm not sure what you mean by "only chicken". Do you eat raw fish? Veges?
I wouldn't
As much as Chick-fil-A is worth visiting if you only eat fish
It depends. They have all sorts of other food that has no meat in it. It sounds like you have some specific meat needs, so I would look at their menu online!
You're really only left with the chicken wings or agedashi tofu. Everything else pretty much has raw or cooked fish.
I'm sure you could find something but it may not be very much, only one or two dishes
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