01 - In a small bowl, combine smoked paprika, garlic powder, onion powder, kosher salt, black pepper, and chili powder. Mix thoroughly until evenly blended.
02 - Pat the chuck roast dry with paper towels. Rub the spice mixture evenly over all surfaces of the meat, pressing gently to adhere.
03 - Set the seasoned chuck roast into the slow cooker insert, positioning it fat-side up.
04 - In a mixing bowl, whisk together barbecue sauce, beef broth, apple cider vinegar, brown sugar, and Worcestershire sauce until the sugar dissolves and the mixture is smooth.
05 - Pour the sauce mixture evenly over the seasoned chuck roast in the slow cooker, ensuring the meat is well surrounded by the liquid.
06 - Cover the slow cooker and cook on the LOW setting for 8 hours, or until the beef is fork-tender and pulls apart with minimal effort. Avoid lifting the lid during cooking to maintain consistent heat.
07 - Carefully remove the beef from the slow cooker and transfer to a large cutting board. Using two forks, shred the meat along the grain, discarding any large pieces of fat or connective tissue.
08 - Return the shredded beef to the slow cooker and stir gently to coat all the meat in the sauce. Let it rest for 5 minutes to absorb the flavors. Serve piled high on burger buns topped with coleslaw, or enjoy over rice.