Spread Soup Over Shell To Within 1/4 Inch Of Edge. Bake At 450 Degrees F. For 5 Minutes. Heat Oil In Skillet. Add Vegetables And Garlic And Cook Until Tender-Crisp. Spoon Vegetables On Pizza. Top With Chicken And Cheese. Sprinkle With Oregano. Bake For 5 Minutes Or Until Cheese Melts.