Preheat oven to 425°F. Line a baking sheet with parchment paper and set aside.
In a small dish, combine the fresh herbs, salt, spices, garlic, lemon zest, and olive oil.
2 tablespoons chopped fresh thyme, 2 tablespoons chopped fresh rosemary, 1 tablespoon chopped fresh sage, 1 tablespoon kosher salt, 1 tablespoon onion powder, 2 teaspoons ground paprika, 2 teaspoons ground black pepper, 5 cloves garlic, 1 tablespoon lemon zest, ½ cup olive oil
Place the turkey, breast side down, on a large cutting board.
12 pound whole turkey
Pat the turkey dry with paper towel.
Locate the backbone of the turkey. Using a pair of kitchen shears, cut through the ribs along both sides of the backbone. Remove the backbone.
Once the backbone is removed, spread the rib cavity apart. The chest bone runs down the middle of the rib cavity. Use your knife to score down the breast bone.
Flip the turkey over and push firmly on the center of the turkey where the breast bone is, so the turkey lays flat.
Spread half of the the herb mixture all over the turkey and underneath the skin by the breasts and thighs. Then, flip it over and spread the rest on the exterior and inside the rib cavity.
Flip the turkey over again so it lays flat on the baking sheet.
Roast for 90 minutes or until the internal temperature at the thickest part of the breast reaches 160-165°F.
Let the turkey rest for 20 minutes before slicing.