Preheat oven to 350°. In a small bowl, mix the first six ingredients. Add chicken, cheese and celery; toss to coat., Cut peppers lengthwise in half; remove seeds. In a Dutch oven, cook peppers in boiling water 3-4 minutes or until crisp-tender; drain., Place in a greased 13x9-in. baking dish. Fill with chicken mixture. If desired, sprinkle with chips. Bake, uncovered, 15-20 minutes or until filling is heated through.