Soak wooden skewers in water for 20 minutes to prevent burning during the grilling process.
Cut the pork tenderloin and pork belly into uniform 1-inch cubes and season them with sea salt and black pepper.
In a small mixing bowl, whisk together the gochujang, tamari, sesame oil, honey, minced ginger, and grated garlic until smooth.
Thread the pork onto the skewers, alternating between the lean tenderloin and the rich pork belly pieces.
Preheat a grill pan or outdoor grill to medium-high heat and lightly coat the surface with avocado oil spray.
Grill the skewers for 3 to 4 minutes per side, brushing generously with the gochujang glaze during the final 2 minutes.
While the pork rests, sauté the cauliflower rice in a non-stick skillet over medium heat until tender and slightly golden.
Serve the skewers immediately over the cauliflower rice and garnish with sliced green onions and toasted sesame seeds.