1: Cut the chicken breast into strips and place in a bowl. Add the fajita seasoning into the chicken and stir to combine.
2: In a large cast iron, heat olive oil over high heat and cook the chicken strips until fully cooked. (About 6-8 minutes)
3: Remove the chicken from the cast iron and set aside. Then add in the sliced onions. Cook the onions until they become translucent.
4: Add in the sliced bell peppers and corn and sauté them for about 4 minutes.
5: Place the cooked chicken back into the cast iron and cook with the bell peppers and onions for another 2-3 minutes.
6: Place the chicken and bell peppers into a flour tortilla and serve with sour cream.