01 - Preheat oven to 325°F.
02 - Pat beef chuck roast dry and season with salt, pepper, smoked paprika, garlic powder, and onion powder.
03 - Heat olive oil in a large oven-safe pot or Dutch oven over medium-high heat. Sear beef on all sides until browned, about 2-3 minutes per side.
04 - Add BBQ sauce and beef broth to the pot. Cover tightly with a lid or foil.
05 - Transfer to the oven and cook for 2-2½ hours, or until beef is fork-tender and easily shredded.
06 - While beef cooks, prepare the slaw: In a large bowl, combine green and red cabbage, carrot, and red onion. In a small bowl, whisk together mayonnaise, Greek yogurt, apple cider vinegar, honey, salt, and pepper. Pour dressing over vegetables and toss to coat. Refrigerate until ready to use.
07 - Remove beef from oven. Shred with two forks directly in the pot, mixing with the BBQ sauce.
08 - Warm tortillas in a dry skillet or microwave.
09 - Spread a generous portion of pulled beef onto each tortilla. Top with slaw, fresh herbs, and pickled jalapeños if desired. Roll up and serve immediately.