01 - In a small bowl, combine the smoked paprika, garlic powder, onion powder, salt, black pepper, and chili powder. Mix well 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 - Transfer the seasoned roast to the slow cooker, positioning it fat-side up.
04 - In a mixing bowl, whisk together the 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.
06 - Cover the slow cooker and cook on the low setting for 8 hours, or until the beef is fall-apart tender and easily shreds with a fork.
07 - Carefully remove the roast from the slow cooker and place on a cutting board. Using two forks, shred the beef apart, discarding any large pieces of fat or gristle.
08 - Return the shredded beef to the slow cooker and stir thoroughly to coat all the meat with the sauce. Serve on burger buns topped with coleslaw, or over rice as desired.