1. In a large pot, heat some oil over medium heat. Add the chicken pieces and brown them on all sides. Remove and set aside.
2. In the same pot, add the chopped onions, garlic, and bell pepper. Cook until softened.
3. Add the chopped tomatoes and cook until they break down and form a sauce.
4. Return the chicken to the pot and add the chicken broth. Bring to a boil, then reduce heat and simmer for 30 minutes.
5. Add the green beans, carrots, potatoes, and pepian spice mix. Simmer for another 20-30 minutes, or until the vegetables are tender and the chicken is cooked through.
6. Season with salt and black pepper to taste. Serve hot.
Notes:
This stew is best served with rice or fresh tortillas.