Combine all marinade ingredients in a bowl and mix well. If using fresh herbs instead of dried, chop them finely before adding. Optionally lightly grind the dried herbs in a mortar before mixing. Coat the chicken drumsticks generously with the marinade, then refrigerate in a covered container for at least 8 hours or overnight.
Preheat the oven to 200°C / 392°F (or 180°C / 356°F if using convection). Remove the marinated chicken drumsticks from the refrigerator, drain well, and reserve the marinade in a separate bowl.
Arrange the drumsticks on a baking sheet and roast in the preheated oven for 40 minutes at 200°C / 392°F (or 180°C / 356°F convection), brushing with the reserved marinade every 10-15 minutes. The drumsticks are done when the internal temperature reaches 74°C / 165°F.