Preheat oven to 450°F. Lightly coat a baking pan with cooking spray.
Season pork tenderloin with salt and black pepper.
In a small bowl, mix hoisin sauce and toasted sesame oil. Brush the glaze generously over the pork.
Bake for 30 minutes.
While the pork bakes, cook the rice using chicken broth instead of water (rice cooker or stove-top).
Prepare the mango salsa: In a medium bowl, combine diced mango, chopped red bell pepper, jalapeño, red onion, lime zest, lime juice, cilantro, and salt. Mix well, cover, and refrigerate until ready to serve.
When the pork is done, remove from oven and slice at a 90-degree angle (against the grain).
Reduce oven temperature to 250°F. Place the sliced pork back into the juices in the baking pan and return to the oven for another 15 minutes to keep warm and soak up flavor.
To serve: Spoon a bed of rice onto each plate, add several slices of pork tenderloin, and generously top with the fresh mango salsa.