Rinse the sticky rice under cold water until clear, then cook according to package instructions until tender and sticky.
In a small mixing bowl, whisk together the coconut aminos, honey, tomato paste, garlic powder, and ground ginger to create the char siu glaze.
Slice the pork tenderloin into half-inch thick medallions and season both sides with sea salt and black pepper.
Heat the sesame oil in a large non-stick skillet over medium-high heat.
Add the pork medallions to the skillet and sear for 3 to 4 minutes per side until a golden-brown crust forms.
Reduce the heat to medium and pour the glaze over the pork, tossing to coat each piece thoroughly.
Simmer the sauce for 2 minutes until it reduces into a thick, caramelized lacquer that clings to the meat.
While the pork finishes, steam the baby bok choy for 3 minutes until the stems are tender and the leaves are bright green.
Fluff the sticky rice and portion it into a bowl, topping with the glazed pork and serving the bok choy on the side.