Season chicken on both sides with chicken seasoning and salt and pepper.
Heat the vegetable oil in a heavy skillet over medium-high heat, Place chicken breasts in the preheated skillet. Do not flip the breasts until the one side is browned, 5 or 6 minutes. Turn chicken.
Cook until the internal temperature reaches 165 degrees F. Add your butter to pan with chicken, stir pan gently until butter melts and browns, about 2 to 3 minutes more.
Serve sliced with melted butter drizzled over top, garnish with fresh parsley if desired.
Notes
Browning the chicken in butter at the end adds flavor, but you can omit this step if you want to save calories.