Thaw beans by placing in strainer and run hot water over beans. Transfer to crockpot. Add chicken, potatoes, chicken broth, V-8, celery, onion, chili powder, salt, and hot pepper sauce, mixed together. Cover. Cook on low for 4 hours. Turn to high setting and heat until bubbly. Add water at this point if needed.
Combine biscuit mix, cornmeal, 1/2 cup cheese, and parsley. Add milk and stir until just moistened. Drop by tablespoons onto stew; cover. Cook 2-1/2 hours more (don't lift cover). Sprinkle dumplings with remainder of cheese.