Preheat your oven to 350 degrees.
Make sure you remove the skin from your chicken legs if you haven't already done so. Make 3 scores on the meaty section of each chicken leg, & place in a gallon sized ziploc bag. Whisk together the olive oil along with the brown sugar & all the spices. Pour the mixture on top of the chicken in the resealable plastic bag.
Marinate for at least 30 minutes. Place the chicken legs in a 9x13 casserole dish, scores facing up. Bake for 40 minutes.