In a large bowl, bruise lemon zest and rosemary between fingers to release oils. Stir in 6 Tbs. oil and the garlic. Place chicken in marinade, cover and refrigerate, turning occasionally, at least 8 hours or overnight. Preheat oven to 450°F Remove chicken from marinade and season with salt and pepper. Heat remaining 4 Tbs. oil in a large skillet over high heat until oil is hot, but not smoking. Add chicken, skin-side down. Place chicken brick on top of chicken. (I just wrap a brick in heavy duty aluminum foil) Cook until the underside is golden brown, about 4 minutes. place skillet with brick in oven and bake until juices run clear when pierced in the thickest part of the ghigh about 14 minutes. Serves 4. Serve with rice pilaf.