Heat the oven to 400 degrees.
Cover a baking sheet with aluminum foil.
Next, add salt and pepper to the chicken breast and place it on the tray lined with foil.
Cook in the oven for 20 to 25 minutes.
STEP THREE: Take out of the oven and let it cool.
Apply nonstick spray to a baking dish.
STEP FOUR: Place half of the crushed doritos at the bottom of the baking pan.
Mix the soup with the milk in a bowl.
STEP FIVE: Pull apart the cooked chicken breasts using two forks.
Mix the black beans and the can of rotel tomatoes together until well combined.
Put a layer of shredded chicken and beans on the Doritos.
STEP SIX: Put some soup on top of the chicken.
Add cheese on top.
STEP SEVEN: Repeat the layers once more and put the pan in the oven.
Cook in the oven for 20 to 25 minutes, until the cheese is melted and bubbling.
The chicken is already cooked, so we don't need to worry about that when baking it.
Have fun!