1. Preheat oven to 400 degrees Fahrenheit.
2. Combine the spices in a bowl.
3. Pat the Cornish hens dry with a paper towel and rub on the spices. Place the hens in a roasting pan and drizzle the olive oil over them. Roast for 45 to 60 minutes, until the skin is golden and an instant read thermometer reads 165 degrees Fahrenheit.