Absolutely delicious Roasted Chicken for dinner

INGREDIENTS ⬇️ ⬇️ ⬇️ ⬇️ ⬇️
3 leg quarters with skin and backs attached, cleaned, pat dried
2 1/2 tsps paprika
3/4 tsp ginger powder
3 tsps all-purpose seasoning
1 tsp Your favourite Creole seasoning
1/2 tsp minced Scotch bonnet pepper
3 tsps minced fresh thyme
1/2 tsp minced fresh rosemary
3 garlic cloves finely minced
1 stalk green onion, finely minced
1 tbsp FRESH lemon juice
2 1/2 tbsps unsalted butter
1 tsp Olive oil
1 whole onion, sliced
Butter to grease the dish
Water, add a little if the juices in the dish start to dry out