Season the chicken with garlic powder, salt and pepper. Heat oil in a skillet over medium heat. Add chicken and cook for 5-7 minutes on each side or until browned and fully cooked. Remove from pan and shred.
Transfer to chicken to slow cooker and add the cream cheese, ¾ cup mozzarella cheese, ¾ cup black beans, onion, chili, paprika, cumin, sour cream, half the parsley, and jalapeno. Cook for 2 hours on high.
Before serving, garnish with the remaining beans, mozzarella cheese, and parsley. Serve with nachos and enjoy.