Combine the Djon mustard, lemon zest, lemon juice, olive oil, minced garlic, fresh thyme, and honey together in a small bowl.
Slather the drumsticks evenly with the marinade then season both sides well with sea salt and freshly cracked pepper, to taste then place into a baking dish that has been coated with cooking spray. Place into the refrigerator to marinate for 2 hours.
Remove from the refrigerator 20 minutes before baking.
Preheat the oven to 400 degrees.
Place the chicken into the oven and bake for 40 minutes or until the chicken is cooked through. Side Note: If the chicken skin is not browned to your liking, turn the oven to broil and cook, WATCHING VERY CAREFULLY, until it's golden brown. Let the chicken rest for 5 minutes before serving. Enjoy.