Cut up chicken. Make individual foil packets by placing chicken pieces in center of square of foil. Sprinkle with taco seasoning. Add salsa and 1 Tablespoon of butter to each packet.
Wrap tightly and freeze. I usually double-wrap the packets.
To cook, prepare a good bed of coals on the fire and place foil packets directly on coals. Cooking time will depend on how hot the coals are, so check frequently. Usually takes 20-30 minutes. Remove with tongs.
When ready to serve, top with shredded cheese.