Heat pan over medium/high heat for two minutes. Add oil. (If you have time, let your chicken come to room temp, about fifteen minutes on the counter )
Pat dry chicken. Season with salt, pepper and garlic powder on both sides. Add chicken to pan. Let it cook for 4 minutes - do not flip chicken until it's nice and golden brown. In order to obtain this nice crust you need the heat to be medium/high. After four minutes, flip breast and cook for another 3 minutes, without touching!
Turn heat down to low, cover pan with lid allowing an inch or so opening for heat to escape. Cook chicken, mostly covered, for 10 - 13 minutes, depending on the thickness of your chicken!