Soak wooden skewers in water for 20 minutes to prevent burning during grilling.
Slice the pork loin into 1-inch cubes, ensuring they are uniform in size for even cooking.
In a small mixing bowl, whisk together the gochujang, toasted sesame oil, honey, tamari, grated ginger, and minced garlic.
Place the pork cubes in a glass bowl and toss with the gochujang marinade until every piece is thoroughly coated.
Cut the zucchini into thick half-moons and season them lightly with sea salt and black pepper.
Thread the marinated pork and zucchini onto the skewers, alternating ingredients to maximize flavor distribution.
Preheat a grill or cast-iron grill pan over medium-high heat and lightly coat with avocado oil.
Grill the skewers for 3-4 minutes per side, turning occasionally, until the pork is cooked through and the glaze is bubbly and slightly charred.