This super simple method will help you to make perfectly cooked chicken every time.
Preheat oven to 425 degrees F (218 C).
Place the chicken breasts in a pan, making sure they don't touch. Sprinkle generously with salt and pepper.
Bake in preheated oven for 23-30 minutes JUST until the chicken registers 165 degrees F (74 C) in the largest part of the chicken piece on an instant read thermometer. Make sure to start checking for doneness at 23 minutes.
Remove from oven and transfer to a plate. Allow to rest for 5-10 minutes before slicing.