PREHEAT THE OVEN TO 350°F. LIGHTLY SPRAY A 9×13 INCH BAKING DISH WITH NONSTICK COOKING SPRAY. IN A LARGE BOWL, COMBINE THE CHICKEN, ÙNCOOKED RICE, CREAM OF CHICKEN, SOÙR CREAM, DICED ONION AND BELL PEPPER, TOMATOES WITH CHILIES, CHICKEN BROTH, FAJITA SEASONING, AND ABOÙT HALF OF THE CHEESE. MIX TO COMBINE. POÙR THE MIXTÙRE INTO THE PREPARED DISH AND SPREAD IT EVENLY. BAKE FOR ABOÙT 25 MINÙTES. REMOVE FROM THE OVEN, TOP WITH THE REMAINING CHEESE AND RETÙRN TO THE OVEN ÙNTIL THE CHEESE IS MELTED.