Rinse chicken in cold water. Place in a 5-6 quart pot and add just enough to cover the chicken completely, about 3 quarters of water. Add onion, garlic, tomatillo, tomato, carrots, celery, jalapeno, parsley, cilantro, jalapeño, marjoram, thyme, bay leaves, black peppercorns, and salt, then bring to a slow simmer.