In a bowl, toss chicken with oil and lemon juice; season with salt and pepper and marinate 1 hour (or up to a day).
Preheat oven to 375°F. Roast chicken, skin-side down, in an oiled roasting pan, 20 to 25 minutes; flip and roast 10 more minutes.
Stir together mustard and honey and season with salt and pepper.
Brush glaze onto chicken.
Broil for 5 minutes.
