Flatten Chicken To 1/4-In. Thickness. In A Large Resealable Plastic Bag, Combine The Flour, Salt And Pepper; Add Chicken And Shake To Coat. In A Large Skillet, Brown Chicken In Butter On Both Sides. Stir In The Broth, Wine Or Additional Broth And Yellow Pepper. Bring To A Boil; Cook For 5 Minutes Or Until Liquid Is Reduced By Half. Stir In The Tomato And Cilantro.