Chicken and Couscous with 40 Cloves of Garlic

Name: Chicken and Couscous with 40 Cloves of Garlic
Ingredients: 3 heads garlic (about 40 cloves); 2 tablespoons olive oil; Kosher salt and freshly ground black pepper; 2 tablespoons vegetable oil, plus more for frying; 2 1/2 pounds bone-in, skin-on chicken thighs (6 to 8 thighs); 2 tablespoons unsalted butter; 1/4 cup dry white wine; 2 cups low-sodium chicken broth; 1 teaspoon finely grated lemon zest plus 1/4 cup lemon juice; 2 teaspoons fresh thyme leaves; 1 cup pearl couscous; 2 tablespoons chopped fresh parsley