In a small saucepan over medium heat whisk together honey, orange marmalade, mustard, garlic, and red pepper flakes. Increase heat to medium-high and bring to a simmer. Remove from heat and allow to cool slightly.

Trim silver skin from the tenderloin. Spray a baking dish large enough to hold the tenderloin with non-stick cooking spray. Season the tenderloin with salt and pepper and place in prepared baking dish.

Spoon the reserved honey orange sauce over the tenderloin and place in a preheated 400-degree oven. Bake for 40 -45 minutes or until internal temperature reaches 140 degrees.

Allow the pork to rest for 10 minutes before slicing. To serve, scoop up any sauce from the bottom of the pan and spoon over sliced pork on a serving platter.

Garnish with sliced oranges and chopped parsley.