An apricot glaze sweetens roast chicken and winter vegetables.
Heat oven to 450 degrees. In a large bowl, toss vegetables with 2 tablespoons oil, 2 tablespoons apricot-jam mixture, and thyme leaves; season to taste with salt and pepper. Arrange in a 9-by-13-inch glass baking pan; roast for 10 minutes.
Meanwhile, in a large skillet, heat remaining teaspoon oil over medium-high heat; season chicken, and brown, 4 minutes. Remove from heat; fill cavities between breast halves with lemon, thyme branches, and fennel tops.
Place chicken, skin side up, in a roasting pan, with vegetables around it; roast 15 minutes. Brush chicken with remaining jam; add 6 tablespoons water to pan. Roast until vegetables are tender and chicken is well browned, about 20 minutes. Discard lemon, thyme, and fennel. Bone each breast half with a sharp knife: Cut along breastbone, scraping rib cage with knife; remove meat with your fingers. Arange meat and vegetables on a serving dish. Pour pan juices over, and serve.