Heat oil in pot and season chicken with salt pepper and let brown a little, add onion, garlic, cumin and oregano.
Add water and bring to a boil, reduce heat and simmer until chicken is cooked.
In the meantime, broil tomatillos and chilies until charred. Purée chilies, tomatillos, cilantro with a little bit of stock from the soup.
Take the chicken out and let cool, then chop into small pieces.
Add chicken, hominy and chili mixture back into soup. Serve with any topping you like. I used avocado, sliced jalapeño, cilantro, lime and sliced radishes. Enjoy!