Preheat oven to 375°F (190°C).
Place the pie shell on a baking sheet.
Spread cooked sausage evenly into the pie shell.
Layer Monterey Jack and Cheddar cheese over the sausage.
Sprinkle green chiles over the cheese layer.
In a mixing bowl, whisk together eggs, half-and-half, salt, and pepper.
Pour the egg mixture evenly over the sausage and cheese layers.
Bake for 35-40 minutes or until a knife inserted near the center comes out clean.
Let the pie stand for 5 minutes before serving.