Preheat oven to 425°.
Fit dough into a 9-inch pie plate. Fold edges under; flute. Line dough with a piece of foil, and arrange pie weights or dried beans on foil. Bake at 425° for 10 minutes. Reduce oven temperature to 350°. Remove pie weights and foil. Bake at 350° for 5 minutes. Cool crust on a wire rack.
Combine 1/3 cup sugar, flour, and cinnamon in a bowl; sprinkle over peaches. Toss gently. Spoon into prepared crust. Bake at 350° for 30 minutes. Combine 1/3 cup sugar, oats, coconut, and butter; sprinkle over peach mixture. Shield edges of crust with foil. Bake an additional 30 minutes or until golden. Cool on a wire rack.