Preheat oven to 350F. Cut off and discard pith from zested lemon and cut off and discard zest and pith from other lemon. In a saucepan of boiling water blanch zest 1 minute and drain in a colander. Cut each lemon crosswise into 6 slices. In a small food processor blend rosemary, garlic, zest, 1 tablespoon oil, lemon juice, and salt until mixture is chopped fine. With tip of a small sharp knife cut small slits all over lamb and rub rosemary mixture over lamb, rubbing into slits. Arrange lemon slices in middle of a large roasting pan and arrange lamb on them. Roast lamb in middle of oven 45 minutes. Quarter potatoes and in a saucepan cover with salted cold water by 1 inch. Bring water to a boil and cook potatoes, covered, 5 minutes. Drain potatoes in colander and in a bowl toss with remaining tablespoon oil. Arrange potatoes around lamb and sprinkle with salt and pepper to taste. Roast lamb and potatoes, stirring potatoes occasionally, 55 minutes, or until a meat thermometer registers 140F. for medium-rare. Transfer lamb to a cutting board and let stand 15 minutes. Increase temperature to 500F. and roast potatoes and lemons in one layer 5 to 10 minutes more, or until golden. Transfer potatoes and lemons with a slotted spoon to bowl and toss with chives. Transfer potato mixture to a platter. Serve lamb, sliced thin across grain, with potatoes, garnished with rosemary and lemon wedges. Serves 6. Gourmet April 1996 Posted to recipelu-digest by Sandy on Mar 16, 1998