Preheat oven to 375 degrees Fahrenheit.
In a 11x7 baking dish add chicken breasts, seasonings, and drizzle with olive oil.
Add onions, black beans, rotel, and chipotle peppers. Stir to combine. Cover, and bake for 50-55 minutes or until chicken is no longer pink and has reached an internal temperature of 165 degrees Fahrenheit.
Shred chicken with two forks. Arrange the taco shells in an 13x9 baking dish. Add a couple of Tablespoons of the chicken mixture into each shell. Top with shredded cheese and green onions.
Bake for 10-12 minutes or just until the cheese melts. Top with garnishes of choice, and enjoy!
