You should be fine although food handlers will tell you there is a 2 hour window with food left out where the bacteria waist becomes to concentrated to much for us to eat . But mostly if any thing happens at all tomorrow you might experience a nice runny bm. So don't fart unless your on the throne or you may be doing laundry too
You should be okay since the chicken had only stayed for 3 hours after being cooked. Chicken takes a day or two to go bad if it is not refrigerated. However, you should seek medical advice if you feel something is wrong after eating the chicken.
You should be fine, but in the future don't leave food out between the temperatures of 40-140 F this is the danger zone and most food borne illness comes from improper handling on the side of the consumer.