02To the bacon drippings, add chicken, onion, red bell pepper, and garlic. Cook, stirring occasionally, for 5 minutes. Add diced green chiles and cook for an additional minute. Add chicken broth and potatoes. Bring to a boil, reduce heat, cover, and simmer for 20 minutes, or until the potatoes are tender. Add frozen whole-kernel corn and creamed corn, and stir well.
03Pour flour into a medium bowl. Gradually whisk in skim milk. Add the milk mixture to the soup and cook over medium heat, stirring frequently, until the mixture thickens, about 15 minutes. Stir in grated sharp Cheddar cheese and cayenne pepper. Season with salt and pepper.
04Ladle the soup into bowls and garnish with chopped scallions, grated Cheddar cheese, and crumbled bacon. If desired, break some tortilla chips over each portion of soup.