Heat the potatoes in a skillet with a drizzle of olive oil. When they are crispy, remove from the pan and set aside. Warm the beans and green chile sauce in the microwave and then stir together with the potatoes.
In a non-stick skillet over medium heat, cook one egg. When the white of the egg turns white, add just a couple tablespoons of water and cover with a lid to finish cooking the rest of the egg. While the egg is finishing, warm a tortilla in the microwave.
Fill the tortilla with the black beans, potatoes and green chile sauce and then layer the soft egg on top. Fold in half and enjoy the messy deliciousness!