If your chicken thigh fillets are skinless, spray or brush the bottom of the pan with oil.
Lay the chicken thigh fillets in a single layer, skin side down (or smooth side down if using skinless) in the pan. Cook over high heat until lightly browned, about three minutes.
Flip the chicken fillets over to brown the opposite side, about three minutes.
Lower the heat to medium and pour a quarter cup cup of teriyaki sauce over the chicken.
Cook for another four to six minutes, flipping the chicken fillets over often, until the sauce has caramelized and coats the chicken fillets evenly.
Serve the chicken teriyaki
Move the chicken fillets to a chopping board and cut into strips.
Pile the chicken teriyaki strips over rice in a bowl (or, alternatively, serve the rice on the side).