Let the pie crust come to room temperature (about 15 minutes) and roll out slightly to make the round a little bit larger. Fit into a 9-inch pie plate, fold the edges under and crimp. Poke several holes in the bottom and sides of the crust with a fork. Bake for 7 minutes; remove from oven. Reduce the oven temperature to 350°F.
Cook the bacon pieces in a large skillet until crisp. Drain on paper towels. Sprinkle the green onions, bacon, ½ cup of Swiss cheese, and ½ cup of cheddar cheese into the baked crust.
Whisk together the eggs, whipping cream, salt, peppers and nutmeg. Gently, pour into the crust; sprinkle with the remaining Swiss and cheddar cheeses.
Bake 35 to 40 minutes or until set. Let stand for about 10 minutes before slicing.
Notes
If you can find applewood smoked bacon, it makes a world of difference in the flavor of this quiche - completely delicious.