Preheat oven to 375°F. Grate peel and squeeze juice from 1 lemon. Cut remaining lemon into slices.
Combine lemon peel, lemon juice, butter, honey, garlic, rosemary leaves, salt and pepper in small bowl; mix well. Combine chicken, potatoes and lemon slices in large bowl. Pour butter mixture over chicken, potatoes and lemon slices; toss to coat. Arrange in single layer on large rimmed baking sheet or in shallow roasting pan.
Bake about 1 hour or until potatoes are tender and chicken is cooked through (165°F). Cover loosely with foil if chicken skin is becoming too dark.
