Chicken Thighs With Spiced Couscous and Carrots

Name: Chicken Thighs With Spiced Couscous and Carrots
Ingredients: 2 Tbsp. smoked paprika; 1 Tbsp. plus 2 tsp. ground coriander; 2 tsp. ground cumin; 1½ tsp. freshly ground pepper; ½ tsp. ground cinnamon; 2 lb. skin-on, bone-in chicken thighs (4–6), patted dry; 2 Tbsp. plus 2 tsp. Diamond Crystal or 1¾ tsp. plus 1 Tbsp. Morton kosher salt, divided; 3 Tbsp. extra-virgin olive oil; 1 large onion, finely chopped; ½ tsp. crushed red pepper flakes; 8 garlic cloves, finely grated; 2 Tbsp. tomato paste; 1 lb. medium carrots, peeled, halved lengthwise, cut into ¼-thick half-moons; 1¾ cups pearl couscous; 1 cup dried apricots, each cut into 2–3 strips; 2 Tbsp. fresh lemon juice; Thinly sliced red onion, parsley leaves with tender stems, and chopped salted roasted pistachios (for serving; optional)