Heat a large nonstick skillet over medium high heat. Add extra-virgin olive oil, 2 turns of the pan, in a slow stream, and add smashed garlic. Season the chicken with seasoning blend. Scatter chicken around the pan in an even layer. Cook chicken pieces 2 minutes on each side to brown, then add the onions, prunes, raisins and stock. Mix spices in a small dish and scatter over the pot. Cover and reduce to moderate heat. Cook 7 or 8 minutes, remove the lid and stir.
To prepare the couscous, bring chicken stock to a boil. Add couscous, extra-virgin olive oil and scallions and remove the couscous from the stove immediately. Cover and let stand 5 minutes. Fluff the couscous with a fork.
Uncover chicken and cook another 2 to 3 minutes to thicken slightly. Adjust the seasoning, to taste, and serve chicken on a bed of couscous. Garnish with chopped cilantro and scallions. Serve with chutney.