How to Make It
Pat duck breasts dry with a paper towel. Using a sharp knife, cut a 1/2-inch crosshatch pattern into the fatty skin, taking care not to penetrate the flesh underneath. Season both sides generously with 1 1/2 teaspoons salt. Sprinkle the meat sides with 1 1/2 teaspoons ras el hanout. Let stand, skin sides up, 30 minutes to 1 hour, until duck breasts come to room temperature.
Meanwhile, place couscous in a medium heatproof bowl. Combine chicken stock, zest, 1/2 cup orange juice, turmeric, and 1 1/4 teaspoons salt in a small saucepan. Bring to a boil over medium-high. Pour boiling liquid over couscous, and immediately cover bowl with plastic wrap. Set aside to allow the couscous to absorb the liquid while you prepare the duck.
Place duck breasts, fat sides down, in a cold large skillet. Place skillet over medium heat. Cook until duck skin is crisp and deep golden brown and most of the fat has rendered, 6 to 8 minutes. Flip duck, and cook, adjusting heat as needed, until thickest part of each breast registers 120°F to 125°F on an instant-read thermometer for medium-rare, 2 to 4 minutes. Transfer duck breasts to a cutting board, fat sides up; let rest about 10 minutes while you finish the dish.
Pour off and reserve duck fat from pan. Add mandarin segments, honey, 1/2 teaspoon salt, remaining 1/2 cup orange juice, and remaining 1/2 teaspoon ras el hanout to pan. Bring to a simmer over medium-high, scraping up bits from bottom of pan. Simmer until juice is slightly thickened, about 2 minutes. Remove pan from the heat. Stir in 1/2 teaspoon salt.
Uncover couscous, and drizzle in 3 tablespoons hot reserved duck fat. Use the tines of a fork to comb the couscous layer by layer until loose and fluffy. Add parsley, mint, dates, and almonds; toss briefly to combine. Stir in remaining 1/2 teaspoon salt.
Spoon couscous into centers of warmed plates. Slice duck breasts against the grain, and arrange them on couscous. Spoon pan sauce and oranges over duck and around plates.