Add the Italian seasoning and black pepper, then stir until combined.
Allow the mixture to reach a gentle simmer. Avoid a rapid boil because excessive heat can cause a cream sauce to separate.
Gradually add the grated Parmesan, stirring after each addition. Continue stirring until the cheese has melted and the sauce is smooth.
Taste the sauce before adding extra salt. Parmesan cheese and chicken broth can both be salty, so additional seasoning may not be necessary.
<h3>7. Return the chicken to the skillet</h3>