Pat the chicken dry with paper towels
Season both sides with salt and pepper
Heat a skillet over medium heat
Add oil or butter to the pan
Place the chicken in the pan
Cook until browned on the first side
Flip the chicken
Cook until the other side is browned
Reduce heat if needed
Cook until the chicken is fully cooked through
Check that the internal temperature reaches 165°F
Remove the chicken from the pan
Let it rest for a few minutes before serving