Dice the pork tenderloin and pork belly into small, bite-sized pieces.
Place a large skillet or wok over medium-high heat and add the pork belly, cooking until the fat renders and the edges become crispy.
Add the pork tenderloin to the pan, seasoning with sea salt and black pepper, and sauté until cooked through and lightly browned.
Stir in the minced garlic and the white parts of the sliced scallions, cooking for 1 minute until fragrant.
Add the chopped kimchi and sauté for 2 minutes to allow the flavors to meld and the edges to caramelize.
Incorporate the chilled jasmine rice, breaking up any clumps, and stir-fry for 3 minutes until the rice is hot and slightly toasted.
Whisk together the tamari, gochujang, and toasted sesame oil in a small bowl, then pour over the rice and toss to coat evenly.
Create a well in the center of the rice and crack the egg into it, scrambling until just firm before mixing it into the rest of the dish.
Garnish the final dish with the green scallion tops and serve immediately.