Before You Begin:
Preheat and prepare your cookware as needed. Cooking times and results may vary depending on your oven, baking dish, and chicken size.
Preheat the oven to 350°F (175°C) and lightly grease a baking dish.
Arrange the chicken pieces evenly in the dish and season lightly with salt and black pepper.
In a bowl, mix the nacho cheese sauce, sour cream, black beans, and half of the shredded cheese until smooth.
Pour the mixture over the chicken and stir gently to coat evenly.
Sprinkle the crushed tortilla chips over the top, then add the remaining cheese.
Bake uncovered for 30–35 minutes, or until the casserole is hot and bubbling around the edges and the chicken reaches 165°F (74°C) internally.
Remove from the oven and let rest briefly before serving.