Spread about 20 hot coals in a flat layer under the dutch oven. Cook the beef and onion until meat is brown and crumbly and onion is tender. Stir in tomatoes with chilies, water and pasta; sprinkle with seasoned salt and pepper as desired. Bring mixture to a boil and cover pot with lid.
Rearrange 7 of the hot coals in a ring under the dutch oven and move remaining coals to the lid. Let simmer about 20 minutes or until pasta is tender. Stir after 15 minutes and then rotate pot and lid to finish cooking. Dish it up hot and sprinkle with cheese.