Preheat oven to 425.
Unwrap bird and rinse it inside and out thoroughly. Pat very dry. This is important for crispy skin.
Salt inside of bird liberally.
Slice lemon in half. Place one half of lemon inside cavity. Put a handful of fresh herbs and the garlic inside cavity, then put other half of lemon in there.
Make sure butter is nice and soft, then spread liberally all over the outside of the bird.
Sprinkle all over liberally with spice mix.
Place chicken in skillet breast side up. Scatter vegetables around it at this stage if using.
Pop in the oven, and after 30 minutes, remove and baste it thoroughly. Flip it over. You may need to add a little chicken stock to keep veggies from sticking and to baste with.
After 25 minutes, remove and baste again. Take its temp.
Start checking its temp more frequently (every 10 - 15 minutes after 60 minutes) and thoroughly basting it. You don't want it to overcook.
It'll be ready sometime between 60-90 minutes or so.
Remove from oven and skillet; place it on a platter, tent it, and let it rest 20 minutes.
Carve and serve!