Preheat your barrel smoker to 275°F (135°C). Hang the air probe for your Smoke X in the pit at the level your chicken will be. Set the high-temp alarm for 300°F (149°C) and your low-temp alarm for 250°F (121°C). Add a chunk of your desired smoking wood to the coals.
While the barrel heats, pat the chicken dry with paper towels and rub it all over with oil.
Liberally season the bird all over with your desired rub(s).
Stick a hook into the neck hole and through one breast, going between the bones of the ribcage.
Insert a probe into the thickest part of the breast and hang the bird in the smoker from one of the horizontal bars.
Set the high-temp alarm on your Smoke X2 to 157°F (69°C).
Close the smoker lid and cook. You can take the receiver from the Smoke X2 into the house with you; it will continue to communicate.
When the high-temp alarm sounds on the chicken, check the temperature with your Thermapen ONE. If you don't find anything lower than 157°F (69°C), the chicken is done!
Remove the bird from the smoker and let it rest for 10 minutes before carving.