Preheat the smoker to 250°F and prepare the wood chips for smoking.
In a small bowl, mix together the brown sugar, paprika, salt, black pepper, garlic powder, onion powder, and cayenne pepper to create the seasoning mix.
powder, and cayenne pepper to create the seasoning mix.
Rub the avocado oil all over the chuck roast, then generously apply the seasoning mix to all sides of the roast, pressing it into the meat.
Place the seasoned chuck roast on the smoker grates, fat-side up, and close the smoker lid.
Smoke the chuck roast for approximately 1 hour per pound, maintaining a consistent temperature of 250°F throughout the smoking process. For a 3-4 pound roast, this will take around 3-4 hours.
In a small saucepan, combine the BBQ sauce, apple cider vinegar, honey, and Worcestershire sauce. Heat the mixture over low heat, stirring occasionally, until well combined and warmed through.
When the internal temperature of the chuck roast reaches 165°F, remove the roast and cube it into bite size pieces.
Return the roast to a foil pan and pour the sauce on top. Toss to coat the beef in the sauce mixture.
Place the pan back into the smoker and continue smoking until the beef reaches an internal temperature of 200-205°F for a tender, pull-apart texture and the sauce has caramelized. This may take an additional 1-2 hours.
Remove the smoked chuck roast from the smoker and let it rest for 15-20 minutes.
Serve the smoked chuck roast hot and enjoy!