Preheat your oven to 425°F (220°C). Line a baking tray with parchment paper for easy cleanup.
In a large bowl, mix together the smoked paprika, garlic powder, onion powder, cayenne pepper, salt, and black pepper.
Add the olive oil and lemon juice to the spice mixture, stirring to form a paste.
Toss the chicken drumsticks in the spice paste, ensuring they are evenly coated. Allow them to marinate for at least 15 minutes (or up to 2 hours for stronger flavor).
Place the marinated chicken drumsticks on the prepared baking tray, spacing them evenly.
Bake in the preheated oven for 30-35 minutes, turning them halfway through, until the chicken is cooked through and the skin is crispy. An internal temperature of 165°F (75°C) is ideal.
Once done, remove the drumsticks from the oven and let them rest for about 5 minutes.
Garnish with chopped fresh parsley before serving.