Nausea after eating Roasted Chicken

I am a healthy guy, 62, work  out, eat pretty well, run 4 miles 5 days a week.
But every time I eat one of those Roasted  Rotissarie Chickens that you get prepared from the supermarkets, I feel mildly nauseated after I eat it.  I have had some acid reflux issues in the am, that appear to be under control without meds, but this is irritating.And it only seems to be with these roasted chickens, matters not which store I get it from.

I have decided NOT to buy them anymore, but they are tasty and I seem to forget the very mild sickness I feel after the meal. Nothing else does this to me.? What could this be?

[FurballsMom]

Perhaps it's the seasonings they use on those chickens.  I'm not sure exactly what else would cause this when the chicken is cooked in this manner either.  But, I've noticed that with certain foods myself, so I know what you're talking about.  

I do know that I must avoid the fattiest parts of the chicken, like the obvious parts of the skin that are full of fat, or the tail and other parts that are obviously very fatty.

Other than the possibility of this being linked to the seasonings people are using and the fatty parts of the bird, I don't really know what else it could be.