Add all ingredients to a screw-top jar. Shake to combine. Set aside.
Using a sharp knife, score chicken drumsticks 2-3 times in the thickest part. Place chicken into a large snap-lock bag. Add marinade, seal and toss to combine. Chill for 15 minutes (or longer if time permits)
Preheat a oiled barbecue grill on medium heat. Barbecue chicken, turning occasionally and basting with any remaining marinade, for 25-30 minutes until golden and just cooked through. Transfer chicken to a serving platter
Sprinkle chicken with roasted peanuts, baby cucumbers and extra sliced red chilli. Serve with steamed jasmine rice and lime wedges