Clean the Roaster in the sink with water & wash the outside & the inside cavity of the chicken. Remove and discard the giblets located inside the cavity.
Pat the Chicken down with paper towels and bring the roaster to room temperature by setting on counter before prepping. No moisture = crispy skin!
Chop the lemon in quarters, the whole bulb of garlic in half, and roughly chop an onion into quarters. Stuff the cavity of the chicken with the lemon, garlic, and onions.
Place the roast chicken in a cast iron skillet & drizzle olive oil all over. Rub & pat the oil into the skin on the front and back of the chicken.
Season both sides of the chicken with kosher salt, pepper, garlic powder, Italian seasoning, & paprika.
Tie the legs closed shut of the chicken with butcher twine. I just make a simple bow (like tying a shoe)
Roast in the bottom third of the oven at 400° for 15 minutes per lb. of chicken.
The temperature of the chicken should be 180° measured in the thickest part of the chicken (the breast) before removing.