Pre-heat oven to 425 degrees F.
Pat chicken with a paper towel to remove any extra moisture.
Salt generously with Kosher salt. Do it everywhere! All over the chicken, inside the cavity, wings, thigh, up, down and sideways.
Mix up the spice blend. Rub into the chicken.
Add cut potatoes and carrots to the cast iron pan. Place chicken on top.
Drizzle 2 tablespoon of olive oil overtop of the chicken and rub all over. Place cut lemon wedges into the cavity of the chicken.
Place the cast iron pan filled with chicken and vegetables into the pre-heated oven. Roast for ~55 minutes or until the internal temperature of the chicken reaches 165 degrees F. Stir the vegetables around in the cast iron pan halfway.
Let rest for about 10 minutes before serving. Carve away and serve with roasted vegetables.