Heat a large skillet over medium heat and add 1 tablespoon of oil. Add the onion, jalapeno, serrano, and garlic and cook until beginning to soften about 5 minutes.
Add the tomatillos, tomatoes and lime juice and season with salt. Cook until the tomatillos and tomatoes begin to break down, about 5 minutes.
Remove the sauce ingredients to a food processor (be careful processing hot foods) and process until chunky-smooth. Set aside.
In the same skillet, heat the remaining 1 tablespoon of oil and add the chorizo. Season with salt and cook, crumbling until just cooked through, 7-8 minutes.
Add 1/4 cup of the sauce to the cooked chorizo and stir well to combine.
Preheat the oven to 350° F and lightly oil a large baking dish.
Lay the warm tortillas (warm tortillas are more pliable) on a work surface and spoon 1/8th of the chorizo mixture down the center of each one. Sprinkle the chorizo with about 2 tablespoons of cheese each.
Roll up each enchilada and place seam-side down in the prepared dish. Spoon the remaining sauce over the top, not smothering. And add more cheese if desired.
Cover the dish with aluminum foil and bake 20 minutes.
Notes
Serrano Peppers are pretty spicy so if you would like only use 1 to flavor this dish.