Step 1: Make crust
In a large bowl, whisk together flour and Mayan Sea Salt. With your fingers or a pastry cutter, incorporate a few pieces of butter at a time into flour mixture until coarse and crumbly. Add ice water, 1 Tbsp. at a time, and mix with a spatula until dough comes together; you may not need all of the water. Dough should not be too crumbly or sticky. Pat dough into a disc shape, wrap in plastic wrap, and chill at least 2 hours.
Step 2: Make filling
In the bowl of a stand mixer fitted with the paddle attachment, combine pumpkin puree, eggs, brown sugar, granulated sugar, Pumpkin Pie Spice, and Mayan Sea Salt. Beat until ingredients are thoroughly combined. Add evaporated milk and Pure Madagascar Vanilla Extract. Beat until filling is completely smooth, about 2 min.
Step 3: Assemble and bake
Preheat oven to 400 degrees. Roll out chilled pie dough to a 12-inch circle on a floured surface and fit into a greased 9-inch pie plate. Trim excess dough and crimp edges if desired. Pour filling into prepared crust and bake for 15 min. Lower oven temperature to 350. Bake for another 45 min. to 1 hour, rotating pie halfway through. Pie is done when a knife inserted in the center of the filling comes out clean. Let cool to room temperature, then transfer to refrigerator to chill.