Combine flour, sugar and salt; cut in butter until crumbly. Gradually add water, tossing with a fork until dough holds together when pressed. Flatten into a disk. Wrap; refrigerate until easy to handle, about 1 hour., Preheat oven to 325°. On a floured surface, roll dough to a 1/8-in.-thick circle; transfer to a 9-in. pie plate. Trim crust to 1/2 in. beyond rim of plate; flute edge., Beat first 7 filling ingredients until blended. Stir in 1 cup pecans and 1/2 cup chocolate chips. Pour filling into crust; sprinkle with remaining pecans and chocolate chips. Bake until crust is golden brown and filling is puffed, 50-60 minutes. Cool completely on a wire rack.