Place bacon in a large, deep skillet. Cook over medium high heat until evenly brown. Drain, crumble and set aside; reserve bacon drippings in skillet.
Add potatoes, onion and chicken to bacon drippings and cook for 15 minutes, stirring occasionally. Pour in chicken broth; season with poultry seasoning, salt and pepper. Stir in corn, and simmer all together for 15 minutes.
Pour in half-and-half and bring to a boil; add crumbled bacon. In a medium bowl, combine biscuit mix with milk and mix well (dough should be thick). Drop tablespoon sizes of dough into boiling mixture; reduce heat and simmer for 10 minutes uncovered, then another 10 minutes covered. (Note: Do not stir while simmering, or dumplings will break apart). Serve hot.