How to Make It
In a shallow glass or ceramic baking dish, sprinkle both sides of the chicken with the salt, pepper, garlic and rosemary and rub the seasonings in thoroughly. Pour the olive oil and lemon juice over the chicken and refrigerate for 1 hour, turning every 15 minutes.
Light a grill. Lightly brush the grate with oil and arrange the chicken breasts on the grate, skin side down, with the breast tips facing in the same direction at a 45° angle to the bars of the grate. Set a large cast-iron skillet on top of the breasts and grill over a medium-hot fire for 8 minutes; rotate the chicken breasts a quarter turn after 4 minutes to make attractive crosshatched grill marks. Flip the chicken breasts and repeat, grilling them until they are cooked through, about 8 minutes longer. Serve with lemon wedges.