Heat 1 tablespoon of the olive oil in a 12-inch nonstick sauté pan or deep skillet over medium-high heat.
Season the diced chicken with salt, pepper, 1/2 teaspoon cumin, 1/4 teaspoon coriander, and 1/4 teaspoon cinnamon.
Add the chicken to the hot pan and cook, turning occasionally, until cooked through, about 7 minutes.
Transfer the cooked chicken to a sheet of foil and wrap to keep warm; set aside.
Heat the remaining 2 tablespoons olive oil in the skillet over medium heat.
Add the chopped red bell pepper and chopped red onion and sauté until softened, about 5 minutes.
Add the matchstick carrots, minced garlic, the remaining 1/2 teaspoon cumin, 1/4 teaspoon coriander, 1/4 teaspoon cinnamon, and turmeric; sauté 1 minute more until fragrant.
Stir in the chicken broth and chopped dried apricots, season with salt and pepper to taste, and bring the mixture to a gentle boil.
Stir in the couscous, then remove the pan from the heat and cover or let rest for 5 to 6 minutes until the couscous is tender and has absorbed the liquid.
Stir the reserved chicken and any juices back into the couscous along with the lemon juice, sliced almonds, chopped cilantro, and chopped mint; if desired, add a splash more broth to loosen.
Serve the dish warm.