In a small skillet, add almonds and sauté until golden, about 5 minutes; set aside.
Season the chicken thighs with freshly ground black pepper and ground sea salt; set aside.
In a large ovenproof skillet over medium heat, add oil and clarified butter. When hot, add thighs, skin side down, and cook about 5 minutes on each side.
Transfer to a plate and remove most of the fat in the pan, keeping about 1 1/2 tbsp.
Add onions, carrots and celery; sauté for 5 minutes.
Add chopped tomatoes and sauté for 3 minutes.
Preheat oven to 350ºF.
Add ras el hanout, turmeric, cayenne pepper, garlic and ginger; sauté for 1 ½ minutes. Pour in the chicken broth and pomegranate molasses; cook for 2 minutes. Adjust seasoning if needed. Add dates and sauté for 2 minutes.
Place thighs back in the pan, skin side up, cover and transfer to the preheated oven. Cook for 1:30 hours, basting every 20 minutes.
Remove the skillet from the heat and transfer the chicken thighs to a plate.
Add cornstarch mixture and stir until the sauce thickens, about 1 minute. To make the sauce glossy, add butter; stir well.
Place 1 thigh on a bed of couscous and spoon the sauce over. Sprinkle on almonds and parsley. Serve with plain yogurt on the side.