Dice the pork loin and pork belly into small, uniform half-inch pieces.
Place the pork belly in a large cold skillet, then turn the heat to medium to slowly render the fat until the bits are golden and crispy.
Add the diced pork loin to the skillet, season with sea salt and black pepper, and sauté until fully browned and cooked through.
Stir in the cauliflower rice and chopped kimchi, spreading the mixture across the pan to maximize contact; cook for 4 minutes until the cauliflower is tender and slightly toasted.
Push the rice and meat mixture to the edges of the pan to create a well in the center.
Whisk the whole eggs and egg whites together, then pour them into the center of the pan and gently scramble until just set.
Drizzle with tamari and toasted sesame oil, sprinkle with gochugaru, and toss everything together to combine.
Serve immediately garnished with thinly sliced green onions.