Is this okay to eat?

[RAMd®d]

Since it came home from a cookout, and you don't know how long it was outside and such, I think you made the most logical decision.

This.

If it had been my own chicken, I'd have eaten it. Of course, this assumes that by "last Saturday" you mean July 13.

If you meant "the Saturday before last" as in July 6, then I definitely wouldn't have eaten it. If it were my own chicken, then I would have considered eating it.