Preheat the oven to 500°F with a large (12-inch) cast iron skillet inside.
Lightly drizzle oil over the top of the chicken, then sprinkle with the dry seasoning mix, pressing gently to adhere. Reserve a bit for the back of the bird. Finish with freshly ground pepper to taste.
Tuck the wing tips under the body. Carefully remove the hot skillet from the oven and reduce the temperature to 425°F.
Place the chicken breast-side down in the skillet. Sprinkle the back with the reserved seasoning, more ground pepper, and a drizzle of oil.
Roast for 20–30 minutes, or until the underside is golden brown. Flip the chicken breast-side up and roast for another 20–30 minutes, or until the internal temperature reaches 165°F (thickest part of breast.)
If needed, loosely tent any areas with aluminum foil to prevent over-browning.
Once fully cooked, remove from the oven and transfer the chicken to a plate or cutting board to stop the cooking process. Let rest for 15 minutes before carving.