Cut the pork tenderloin into 1-inch cubes and place them in a medium glass bowl.
In a small jar, whisk together the gochujang, coconut aminos, honey, toasted sesame oil, rice vinegar, grated ginger, and minced garlic.
Pour half of the marinade over the pork cubes, tossing to coat evenly, and let marinate for at least 15 minutes.
Slice the zucchini into half-inch thick rounds and season lightly with sea salt and black pepper.
Thread the marinated pork and zucchini rounds onto skewers, alternating between the two.
Preheat a grill pan or outdoor grill to medium-high heat and lightly grease with a high-heat oil if needed.
Grill the skewers for 3-4 minutes per side, or until the pork is cooked through and has a beautiful charred exterior.
Remove from heat, brush with the remaining reserved marinade, and garnish with sesame seeds and sliced green onions.