PREPARE: Preheat the oven to 400 degrees Farenheit. Adjust the oven rack to the center position. Line a large baking sheet with foil and fit a metal drying rack inside.
SEASON THE CHICKEN: Pat the chicken dry with a paper towel. In medium bowl, whisk together the honey, mustard, rosemary, and garlic powder together. Add the chicken thighs to the mixture and toss them to coat all sides of the chicken.
ROAST: Arrange the chicken skin side up on the baking sheet fitted with a drying rack. Sprinkle with salt and pepper and roast for 40-45 minutes or until the skin is crispy and the juices no longer run pink inside the chicken.
SERVE: Allow the chicken to rest for 5 minutes. Sprinkle fresh parsley on the chicken and serve warm