1Heat oven to 400°F. In 10-inch skillet, heat oil over medium heat. Cook bell pepper in oil, stirring occasionally, until crisp-tender. Stir in chicken, salsa and water. Cook 1 to 2 minutes, stirring occasionally, until bubbly. Pour into ungreased 1 1/2-quart casserole; set aside.
2In small bowl, stir together remaining ingredients. Pour over chicken mixture; carefully spread almost to edge of casserole.
3Bake uncovered about 30 minutes or until light golden brown. Write a message with squeezable ketchup if desired.