Pierce sweet potato all over with a fork or sharp knife then microwave for 2 minutes. Flip then microwave for 2 more minutes. Keep flipping and cooking for 2 minutes per side until you can easily pierce into the center with a skewer. Set aside to cool. Once cool enough to handle, peel away skin from sweet potato then dice and set aside. Can be done a day ahead of time.
Preheat broiler then heat extra virgin olive oil in a large, 12” skillet over medium-high heat. Add chicken and shallot or onion then season with taco seasoning and saute until cooked through. Turn heat down to medium then add cooked sweet potatoes, black beans, tomatoes, green chilis, enchilada sauce, and tortillas then fold and simmer until everything is heated through. Sprinkle with cheese then place under the broiler to melt. Scoop into bowls then serve.