I added an extra cup of chicken broth, and an extra half cup of heavy whipping cream, the dish seemed a bit dry before adding the extra liquids. I also accidentally bought lactose free heavy whipping cream, but I could not tell the difference :)
Did a loose following of this recipe. Notably cooked cubed chicken in the pan before removing and cooking the tomatoes as directed, and adding a 1/4 cup of cream instead of pasta water.