Whisk orange juice, peanut butter, marmalade and red pepper flakes together in a small bowl. Reserve a few tablespoons of the sauce for after grilling.
Prepare a grill for indirect cooking.
Sprinkle pork with salt and pepper; brush lightly with sauce.
Sear meat on both sides over high heat.
Cook pork over indirect heat until internal temperature reaches 150°F, brushing occasionally with sauce.
Remove pork from the grill and allow to rest 10 minutes before slicing.
Drizzle with reserved sauce and sprinkle with peanuts before serving.
Join us and our Podcast host, Mark Borison, on a super safari every Wednesday as we explore the world of food, plus discuss people, art, culture, and more!