Start by mixing the harissa sauce, honey, olive oil, lemon juice, kosher salt, garlic powder, smoked paprika, ground cumin, and ground coriander in a bowl. This creates the perfect balance of sweet, spicy, and savory. Add your chicken breasts to the mixture, making sure they’re fully coated. Let them marinate for at least 15 minutes. If you have the time, marinate for an hour or even overnight for maximum flavor.