Place chicken pieces in a large bowl. Pour buttermilk over them and mix well. Cover and refrigerate for at least one hour. This step makes the chicken tender and flavorful.

In another bowl, mix flour, breadcrumbs, garlic powder, paprika, salt, pepper, thyme, and onion powder. Stir well so all spices combine evenly and create a flavorful coating.

Preheat your oven to 400°F. Line a baking sheet with parchment paper and place a wire rack on top. This setup helps the chicken cook evenly and stay crispy.

Remove chicken from buttermilk and let excess drip off. Coat each piece in the flour mixture and press gently so the coating sticks well before placing on the rack.

Drizzle olive oil evenly over the chicken pieces. This step helps create a golden crust without deep frying while keeping the inside juicy and tender during baking.

Bake the chicken for about 35 to 40 minutes, turning once halfway through cooking. The chicken should be golden brown and cooked through. Let it rest before serving.