Preheat your oven to 400°F (200°C).
In a small mixing bowl, whisk together the honey, coconut aminos, tomato paste, sesame oil, minced garlic, grated ginger, and Chinese five spice powder to create the glaze.
Season the pork tenderloin with sea salt and black pepper.
Heat a large oven-safe skillet over medium-high heat and sear the pork for 2 minutes on each side until browned.
Brush half of the honey-garlic glaze over the pork and transfer the skillet to the oven.
Roast for 12 to 15 minutes, or until the internal temperature reaches 145°F, brushing with the remaining glaze halfway through the cooking time.
While the pork roasts, steam or lightly sauté the baby bok choy in a separate pan with a splash of water until the leaves are wilted and the stems are tender-crisp.
Remove the pork from the oven and let it rest for 5 minutes before slicing into medallions.
Serve the sliced char siu pork over the cooked jasmine rice with the bok choy on the side, drizzling any extra pan juices over the top.