In a large bowl, whisk together ½ cup of enchilada sauce, 1 cup of sour cream, the diced green chilies, and all the filling seasonings: chili powder, ground cumin, onion powder, garlic powder, smoked paprika, salt, and pepper. Stir this mixture well, then fold in the shredded chicken until combined. Finally, add in 2 ½ cups of shredded Monterrey Jack cheese and mix until evenly integrated. Set this aside.
Next, lightly spray a 9x13 baking dish with nonstick cooking spray. Pour ½ cup of enchilada sauce evenly over the bottom of the dish. This will keep your enchiladas moist as they bake.
Take some of the remaining enchilada sauce and pour it into a shallow dish or pie pan. This will be used for coating the tortillas later.
Add enough canola or vegetable oil to a cast iron or medium skillet to cover the bottom. Heat this over medium-high heat.
Working with one corn tortilla at a time, dip it into the heated oil and lightly fry for about 10 seconds on each side. You want it soft with a few bubbles but not browned or crispy. Once done, place the fried tortillas on a paper towel-lined plate, with paper towels in between each row to absorb excess oil. Repeat this process until you’ve cooked 12 to 14 tortillas.
Now, working with one tortilla at a time, dip it into the enchilada sauce in the shallow dish, coating it well. Place it on a cutting board and fill with a generous amount of the chicken mixture—about ⅓ cup should do. Roll up each tortilla tightly and place seam side down in the prepared baking dish. Repeat this process until all the tortillas are filled and placed in the dish.
Once all enchiladas are assembled, pour all remaining enchilada sauce over the top. Make sure to cover them well!
Sprinkle the remaining 1 ½ cups of shredded Monterrey Jack cheese on top of the enchiladas, making it nice and cheesy.
Preheat your oven to 350 degrees Fahrenheit. Bake the enchiladas for about 25 minutes, or until bubbly. For a golden finish, broil until the cheese is nicely browned.
Finally, remove the enchiladas from the oven and sprinkle with some chopped cilantro and any other desired toppings before serving. Enjoy!
