Spice up your taco night with this delicious chuck roast recipe. Season the roast with chili powder, cumin, and paprika, and sear it in a hot skillet until browned on all sides. Transfer the roast to a slow cooker with some diced tomatoes, onions, and beef broth, and let it cook on low for 8-10 hours. Shred the meat and serve it in warm tortillas with your favorite taco toppings.