Preheat your oven to 350°F. Place the unbaked pie crust in a 9-inch pie pan and crimp the edges.
Arrange pecan halves in the bottom of the pie crust in a single layer.
In a large bowl, whisk together the beaten eggs, sugar-free maple syrup, sweetener, melted butter, vanilla extract, and salt until well combined.
Pour the filling mixture over the pecans in the pie crust.
Bake for 50-55 minutes, or until the center is set but still slightly jiggly. Cover the edges with foil if they brown too quickly.
Cool completely on a wire rack before slicing. The pie will continue to set as it cools.