Heat oil in a large pot over medium-high heat. Add chicken and brown lightly, about 5 minutes. Add onions and garlic and cook until softened, about 5 more minutes. Add the cumin, oregano, salt and pepper and cook until you can smell the spices, about 30 seconds. Add the hominy, jalapeno pepper and tomatillos and cook, stirring for another minute. Add the swiss chard, chicken stock and bay leaves and bring to a boil. Reduce heat, cover pot and simmer for 20 minutes. Remove bay leaves and serve in bowls with garnishes on the side to be added at will.