Combine the first 5 ingredients; sprinkle over chicken. In a large skillet, heat oil over medium heat. Brown chicken in batches; return all to skillet. Add onion, apricot and dates; cook 5 minutes longer. Stir in stock and lemon juice; bring to a boil. Reduce heat; simmer, covered, until a thermometer reads 170°, 5-7 minutes. Uncover and top with feta and green onions. If desired, serve with couscous.