In A Small Skillet, Saute Celery And Onion In Butter Until Crisp-Tender. Place In A Bowl; Add The Mayonnaise, Soup, Peas, Lemon Juice And Salt. Stir In Chicken And Rice. Transfer To A Greased 11-In. X 7-In. X 2-In. Baking Dish. Sprinkle With Potato Chips. Bake, Uncovered, At 350 Degrees F For 25-30 Minutes Or Until Heated Through.