I forgot to turn my slowcooker on overnight w/ chicken in it, can I eat it still?
Without knowing for sure that the temp didn't stray into the danger zone, I wouldn't eat it. Within 9 hours I think it is very likely that the chicken went from refrigerator temperature to danger temperature. 

40 degrees F is the start of the danger zone. See:

https://www.fsis.usda.gov/wps/portal/fsis/topics/food-safety-education/get-answers/food-safety-fact-sheets/safe-food-handling/danger-zone-40-f-140-f/ct_index

I doubt the human finger is calibrated finely enough to reliably measure this temp with high enough confidence to avoid the risk of food poisoninng.