Place all ingredients for sauce in a large sauté pan over medium heat. Whisk to combine then let reduce for 20-25 minutes. It will reduce by a third and coat the back of a spoon when ready.
Once sauce is on the stove, mix together spices. Pat tenderloin dry then spread spices evenly on tenderloin. Wrap bacon around tenderloin, securing ends with toothpicks.
Place a large cast iron skillet over medium-high heat. Once hot, sear bacon wrapped tenderloin on all sides, for about 3-4 minutes per side until bacon is golden brown.
Once seared, put cast iron skillet directly into oven and bake for 10-12 minutes, until tenderloin reaches an internal temperature of 140 degrees F.
Let tenderloin rest for 5 minutes then slice and pour orange chili sauce on top.