Cook bacon according to the package directions.
To make the sauce: Heat a medium saucepan over medium heat.
Add the butter and cook until melted. Add the flour and whisk until combined with the butter.
Slowly add in the chicken broth, whisking constantly. Let it cook for 2 to 3 minutes until slightly thickened.
Stir in the cumin, salt and green chiles. Add the sour cream and whisk until smooth. Stir in the cheese until melted.
To make the eggs: Crack the eggs into a medium bowl. Add the half-and-half, salt and pepper, and whisk for 1 minute.
In a medium, nonstick skillet, heat butter over medium heat.
Add the eggs and cook until fully cooked and scrambled, stirring occasionally, about 6 minutes.
To assemble the tacos: Divide the bacon and eggs between the tortillas.
Top with avocado, tomato and cheese, then drizzle with green chile sauce. Enjoy!