Cut some slits on the thickest part of the chicken drumsticks. Mix the mustard, garlic, honey, salt and pepper together.
Pour about 1/2 of the mixture into a large sandwich bag with the chicken.
Close the top and rub it all around. Let it sit to marinade for at least an hour or overnight if you please.
Pre-heat your oven to 200C. Arrange the chicken on a wire rack sitting on a tray.
Cook for the first 20 mins. Flip it over. Let it cook for further 10 mins. (this is depending on your oven, some oven might take longer, I gave mine like 45 mins in total)
Turn your top grill on, baste the chicken with the remaining marinade. And let it char and crisp a bit. Glazing with the marinade will give it a shiny exterior.
Eat with potato salad or just as it is.