Cinnamon and lime chicken fajitas

This is a new favorite of ours.. found it on allrecipes.com but added a few things of my own.

Cinnamon and lime chicken fajitas:

4 boneless, skinless chicken breast halves
1 tablespoon ground cinnamon (or more, I was very generous with the cinnamon)
kosher salt and pepper to taste
2 large baking potatoes, peeled and cubed
1/4 cup olive oil
1 large yellow onion, chopped
1 large clove garlic, peeled and minced

1 teaspoon cayenne pepper

1/2 cup black beans

1/2 cup corn
1 lime, juiced

sour cream
corn/flour tortillas, warmed

Directions
Preheat oven to 400 degrees F (200 degrees C).
Place potatoes in a shallow baking dish. Drizzle with about 1/2 the oil, and season with salt. Bake 30 to 40 minutes in the preheated oven, until tender.
Meanwhile, season chicken with cinnamon, salt, and pepper. Arrange in a separate baking dish, and bake 30 minutes in the preheated oven, until no longer pink and juices run clear. Cool and shred.
Heat remaining oil in a skillet over medium heat, and saute onion and garlic until tender. Mix in shredded chicken, black beans, corn, cayenne pepper, and lime juice. Cook until heated through.
Serve the chicken and potatoes in warmed tortillas, topped with sour cream. Enjoy!