Whisk in the flour and cook over low heat, constantly stirring, for 2 minutes and then keep stirring as the hot broth is added to the sauce. Add the corn, carrots/peas, black pepper, nutmeg, thyme, rosemary, sage, and shredded chicken. Simmer over low heat, occasionally stirring for 10 more minutes, stirring, until thick. Add heavy cream and cilantro or parsley and mix well and cook for 5 more minutes, stirring occasionally. Taste and adjust seasoning, if necessary.