Chicken Satay with Grilled Vegetable Couscous

Name: Chicken Satay with Grilled Vegetable Couscous
Ingredients: 1 (14-ounce) can unsweetened coconut milk; 1/4 cup brown sugar; 2 tablespoons soy sauce; 2 teaspoons chopped garlic; 1 teaspoon ground cumin; 1/2 orange, zested, reserve remainder for Grilled Fruit Skewer recipe; Kosher salt and freshly ground black pepper; 2 pounds boneless, skinless chicken thighs, about 8 thighs; 12 (10-inch) skewers; 1/2 cup peanut butter; 1 tablespoon hot sauce, or to taste; Canola oil, for brushing; 1 (10-ounce) package couscous; 1 green bell pepper; 1 medium zucchini; 1 medium red onion