In a medium bowl, stir together the crumbled bacon, softened cream cheese, chopped jalapenos, and 1/4 cup of the shredded cheddar cheese until well combined.

Place your chicken breasts on a cutting board. Using a sharp knife, cut about six slits across the top of each breast. Be careful to cut deep enough for the filling but do not cut all the way through the bottom.

Carefully stuff the cream cheese mixture into each of the slits, distributing it evenly between the two chicken breasts.

Place the chicken in the air fryer basket. Set the temperature to 350 degrees Fahrenheit and cook for 14 minutes.

With one minute of cooking time remaining, open the air fryer and sprinkle the remaining 1/4 cup of cheddar cheese over the tops of the chicken.

Close the air fryer and cook for the final minute until the cheese is melted and bubbly.

Check the internal temperature to ensure it has reached 165 degrees Fahrenheit. Let the chicken rest for a few minutes before serving.