Mix 1 tbsp sea salt, 2 tsp onion powder, 2 tsp dried rosemary, 2 tsp cocoa powder 2 tsp paprika, 1 tsp ground fennel seeds, 1/4 tsp cayenne pepper and 1 tsp black pepper in a small bowl.
Place pork in the slow cooker and rub spice mixture over the pork.
Add 1/3 cup chicken broth to the slow cooker.
Cook on high for 4 – 5 hours or low for 6 – 8 hours. For best results cook on low.
Shred pork with metal claws.
Set slow cooker to warm for 20 minutes.