01 - Preheat oven to 375°F and grease a 9x13-inch baking dish
02 - Heat olive oil in a large skillet over medium heat. Sauté diced onion and red bell pepper for 3-4 minutes until softened. Add minced garlic and cook 1 additional minute
03 - Stir in shredded chicken, black beans, diced green chiles, and taco seasoning. Mix thoroughly and cook for 2 minutes. Remove from heat
04 - Whisk together sour cream, cream of chicken soup, whole milk, ground cumin, paprika, salt, and black pepper in a large bowl until smooth
05 - Spread thin layer of creamy sauce on bottom of prepared baking dish. Arrange 4 tortillas, overlapping as necessary to cover surface
06 - Distribute half of chicken and bean mixture over tortillas. Drizzle with one-third of creamy sauce. Sprinkle with one-third of each cheese
07 - Add another layer of 4 tortillas. Top with remaining chicken mixture, one-third of sauce, and one-third of cheeses
08 - Arrange remaining 4 tortillas on top. Cover with remaining sauce and both cheeses
09 - Cover dish with aluminum foil and bake for 25 minutes
10 - Remove foil and continue baking 10 minutes until cheese bubbles and turns golden brown
11 - Let lasagna rest 10 minutes before slicing. Garnish with fresh cilantro and serve warm