Cream together butter and sugar until smooth. Add egg and vanilla and mix until thoroughly blended. Mix in flour and baking soda, making sure no lumps remain. With a large spoon (NOT an electric mixer), stir in oatmeal, crumbled potato chips and chocolate chips. Drop dough by rounded teaspoons onto ungreased baking sheet (leaving approximately 2 inches between cookies). Bake at 350°F for 8-12 minutes. Cool on cookie sheet for 2 minutes, then remove to cooling rack.