Bring Large Pot Of Water To A Boil, And Stir In Penne Pasta. Meanwhile, In A Large Skillet Over Medium Heat, Cook Chicken Cubes In Broth; Simmering Until Done, About 10 Minutes. Stir In Cubed Cream Cheese And Spinach. Return To Simmer, And Cook About 5 Minutes, Stirring Occasionally. Stir In Cherry Tomatoes, And Cook About 3 Minutes More. In A Large Bowl, Mix Together Cooked, Drained Pasta And Sauce. Let Stand A Few Minutes Before Serving.