In A Large Mixing Bowl, Dissolve Yeast In Water. Add 1-1/2 Cups Flour, Oil, Sugar And Salt; Beat Until Smooth. Add Enough Remaining Flour To Form A Soft Dough. Turn Onto A Floured Surface; Knead Until Smooth And Elastic, About 6-8 Minutes. Place In A Greased Bowl, Turning Once To Grease Top. Cover And Let Rise In A Warm Place Until Doubled, About 1 Hour. Punch Dough Down. Divide In Half And Roll Each Half Into A 13-In. Circle. Place Each Piece On A Lightly Greased 12- To 13-In. Pizza Pan. Combine Soup, Paprika, Oregano, Garlic Powder, Salt And Pepper; Spread Over Each Pizza. Layer With Green Pepper, Onion, Mushrooms And Chicken. Combine Cheeses; Sprinkle Over Pizzas. Bake At 425 Degrees F For 20-25 Minutes Or Until Crust Is Browned And Cheese Is Melted.