Whisk the gochujang, coconut aminos, grated ginger, and minced garlic in a small bowl to create a smooth, spicy glaze.
Heat a large cast-iron skillet over medium-high heat and add the finely diced pork belly, cooking until the fat renders and the pieces become golden and crispy.
Add the cubed pork tenderloin to the skillet, seasoning with sea salt and black pepper, and sear until browned on all sides and cooked through.
Pour the gochujang glaze over the meat, tossing for 1 minute until the sauce thickens into a sticky, vibrant coating.
Remove the pork from the pan and set aside; add the sesame oil to the same skillet and sauté the cauliflower rice for 3 minutes.
Stir in the baby spinach until just wilted, then transfer the cauliflower rice and greens to a serving bowl.
Top the bowl with the glazed pork mixture, sliced green onions, and sesame seeds for a clean, flavor-packed meal.