For the Soup:
3 ounces pumpkin seeds (85g; about 1/2 cup)
2 1/2 pounds bone-in chicken leg quarters (1.2kg; about 3 leg quarters)
1 pound tomatillos (450g)
1 large white onion, roughly chopped
1 jalapeño pepper, stems and seeds removed, roughly chopped
1 poblano pepper, stems and seeds removed, roughly chopped
1 Anaheim pepper, stems and seeds removed, roughly chopped
6 cups homemade or store-bought low-sodium chicken stock (1.5 liters)
2 tablespoons dried oregano, preferably Mexican (about 8g)
2 sprigs epazote (optional)
Salt
Handful fresh cilantro leaves and fine stems
1 (28-ounce; 800g) can white hominy, drained (see note)
To Serve:
Diced avocado
Diced radishes
Thinly sliced serrano or jalapeño peppers
Chopped fresh cilantro leaves
Finely chopped white onion