Heat Oven to 375°F
Brush the bottom of a 10-12 inch cast iron skillet with olive oil
Place chicken in pan. Salt and Pepper to taste
Place skillet on bottom rack in hot oven and bake for 15 minutes
Meanwhile,melt butter in a small saucepan over medium heat.
After butter is melted add garlic and rosemary cook 3-5 minutes,stirring occasionally until fragrant. Removed from heat
After baking chicken for 15 minutes remove and pour butter mixture over top chicken. Put back in oven 20 more minutes longer or until chicken is no longer pink.
Plate and enjoy