Prepare a 9-inch pie crust using a prepared crust or the Pastry for a Single-Crust Pie* recipe at https://okwheat.org/recipes/pastry-for-a-single-crust-pie/. Heat oven to 425°. Roll out the pastry, place in a 9-inch pie plate and prick the bottom and sides with a fork. Bake for 10 to 12 minutes or until lightly golden. Reduce oven temperature to 350°.
In a skillet, brown the hamburger and drain well. Add the onion and cook until softened. Stir in the taco seasoning and mix well.
Layer the baked pie crust in this order: refried beans, diced green chilies, meat mixture, Monterey Jack cheese, cheddar cheese and chopped olives. Pour the beaten eggs evenly over the top. Bake at 350° for about 30 minutes or until the eggs are set.
Garnish as desired with sour cream, chopped lettuce, olives and salsa before serving.