1Heat oven to 400°F. Spray 9-inch pie plate with cooking spray or grease with shortening.
2Stir chicken, bell pepper and pizza sauce in pie plate; arrange evenly. Sprinkle with cheese. Stir remaining ingredients in small bowl with fork or wire whisk until blended. Pour into pie plate.
3Bake 25 to 30 minutes or until knife inserted in center comes out clean. Let stand 5 minutes before serving.