Prepare the chicken: Butterfly the chicken breast for even thickness.
Season: Rub both sides with green seasoning, then coat generously with jerk seasoning.
Marinate: Let it sit for at least 30 minutes (overnight for deeper flavor).
Heat oil: Add oil to a skillet over medium heat.
Add the chicken to the skillet. Move it around slightly, then let it sit undisturbed for 3 minutes to develop a crust.
Flip and repeat on the other side.
Continue flipping every few minutes until the chicken is cooked through and reaches an internal temperature of 165°F.
Serve: The outside should be crusted and slightly charred, with a juicy, tender inside.