In a small bowl, combine the lemon juice, paprika, black pepper, cumin, garlic powder, salt, 2 tbsp olive oil, and lemon zest.
Marinate the chicken drumsticks in this mixture for at least 1 hour (or overnight).
Preheat oven to 375°F/190°C.
In a frying pan, heat the butter and 1 tbsp olive oil and fry the drumsticks over medium to high heat for 2-3 minutes, or until the skin becomes golden. Transfer chicken to a baking dish and cover with aluminum foil.
Bake for 20-25 minutes.
Chop the onion into small 1 inch rectangular pieces. In a frying pan, heat 2 tbsp of olive oil over medium-high heat and fry the chopped onion until they become translucent in color (about 2-4 minutes).
Add the golden raisins and continue frying until raisins slightly darken in color; stirring continuously. Be careful to not over-fry because the raisins can blacken quickly. Remove from heat and set aside.
Combine the onion and raisin mixture with the prepared couscous and gently mix. Serve alongside the chicken drumsticks.