In a bowl, carefully measure out all the ingredients for the seasoning. Mix the spices together thoroughly, ensuring they are well combined. Store the seasoning in an airtight container to preserve its freshness.

Preheat your oven to 375 degrees F. Take a chicken breast and place it between two sheets of plastic wrap. Using a meat mallet or rolling pin, gently pound the chicken until it becomes flat. Sprinkle 1-2 teaspoons of the chipotle seasoning onto the chicken, evenly coating both sides.

Heat a cast-iron skillet over medium-high heat. Add the seasoned chicken to the skillet and sear it for approximately 2-3 minutes on each side, until a golden crust forms. Transfer the skillet with the chicken into the preheated oven and continue cooking for around 8-10 minutes, or until the chicken reaches an internal temperature of at least 165 degrees F.

Once cooked, remove the chicken from the oven and allow it to rest for 5 minutes before slicing. This resting period helps to retain the juices and ensures a tender and juicy result.