Here are the easiest ways:

* baked chicken – sprinkle with salt & pepper – bake at 350º for 25 minutes – check to be sure it’s 155-160º internal temp and let rest for 5 min
* rotisserie chicken – you can use a store-bought rotisserie chicken and slice up the cooked chicken breast

You could cook on a skillet but I feel it dries out the chicken breast too much. You could sear the chicken on the skillet for 2 minutes per side and then bake for 20-25 minutes to get the best of both worlds.