Bilad al-Sham Kitchen - Grilled chicken with thyme and lemon in the butterflied style

Whole chicken with skin3 lemons, cubed2 garlic cloves4 small onionsDried thymeLemon juice1 teaspoon garlic powder1 teaspoon onion powder1 teaspoon black pepper1 teaspoon ground coriander1 teaspoon smoked paprika2 potatoes, cubedOlive oil2 sprigs of rosemarySalt