Lightly spoon flour into dry measuring cups; level with a knife. Combine flour, sugar, salt, and baking powder in a bowl; cut in coconut oil as best as you can with a pastry blender until mixture resembles coarse meal.

Make a well in center of flour mixture. Pour hot water into center of well. Gently draw flour mixture into the water until moist clumps form. Press dough into a 4-inch circle. Cover, and chill 30 minutes.

Slightly overlap 2 sheets of plastic wrap. Unwrap dough; place on plastic. Cover dough with 2 additional sheets of overlapping plastic wrap. Roll dough into a 13-inch circle.  Fit dough into a 9-inch pie plate coated with cooking spray. Fold edges under; flute.