Lemon Mustard Roast Chicken

INGREDIENTS
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1 (3 1/2- to 4-pound) whole chicken, giblets discarded
1 tablespoon extra-virgin olive oil
Salt and pepper
1 lemon, quartered
1 shallot, minced
1 cup chicken broth
2 teaspoons Dijon mustard
2 tablespoons unsalted butter
1 ½ teaspoons minced fresh thyme

INSTRUCTIONS
SERVES 4
We prefer to use a 3 1/2- to 4-pound chicken for this recipe. If roasting a larger bird, increase the time when the oven is on in step 2 to 30 to 40 minutes.

1. Adjust oven rack to middle position, place 12-inch cast-iron skillet on rack, and heat oven to 450 degrees. Meanwhile, pat chicken dry with paper towels, rub with oil, and season with salt and pepper. Tie legs together with kitchen twine and tuck wingtips behind back.

2. When oven reaches 450 degrees, place chicken breast side up in hot skillet. Roast chicken until breast registers 120 degrees and thighs register 135 degrees, 20 to 30 minutes.

3. Arrange lemon quarters cut side down around chicken. Turn off oven and leave chicken in oven until breast registers 160 degrees and thighs register 175 degrees, 15 to 20 minutes.

4. Using potholders, remove skillet from oven. Transfer chicken to carving board, tent loosely with aluminum foil, and let rest for 15 minutes. Let roasted lemon cool slightly, then squeeze into fine-mesh strainer set over bowl, extracting as much juice and pulp as possible; press firmly on solids to yield 2 teaspoons juice.

5. While chicken rests, pour off all but 1 tablespoon fat from skillet, being careful of hot skillet handle. Add shallot and cook over medium heat until softened, about 30 seconds. Whisk in broth and mustard, scraping up any browned bits. Bring to simmer and cook until mixture is reduced to 3/4 cup, about 3 minutes. Stir in any accumulated chicken juices. Off heat, whisk in butter, lemon juice, and thyme. Season with pepper to taste; cover to keep warm. Carve chicken and serve with sauce.