I'm not sure where your numbers are coming from. According to the manual, the lowest smoking temperature is 200F (about 95C). It looks like your temperatures are off. Also, three and a half hours to smoke a chicken breast sounds like a really long time. Essentially, it appears that you've overcooked your chicken.

I'm not sure where your numbers are coming from. According to the Pit Boss Lexington manual, the lowest smoking temperature is 200F (about 95C). It looks like your temperatures are off. Also, three and a half hours to smoke a chicken breast sounds like a really long time. Essentially, it appears that you've overcooked your chicken.