Stem and chop collard greens. Stem and chop anaheim chile. Chop onion. Heat 1tsp olive oil in skillet; saute chile 30 sec ;saute onions 2 min ; saute garlic 30 sec.
Spray inside of crock-pot with cooking spray. Place chopped greens into crock-pot. Add ham hock. Add onion mixture, salt, pepper and red pepper flakes. Cover with a mixture of 50%/50% water/chicken broth to 1 inch above greens.