Preheat your grill or grill pan to medium-high heat.
Cut the pork loin into 1-inch cubes and the red bell pepper into similar-sized squares for even cooking.
In a medium glass bowl, whisk together the gochujang, coconut aminos, toasted sesame oil, rice vinegar, raw honey, garlic powder, ginger powder, and sea salt.
Toss the pork cubes in the marinade until every piece is thoroughly coated and let them marinate for at least 15 minutes.
Thread the marinated pork and bell pepper pieces onto skewers, alternating between the meat and the vegetable.
Place the skewers on the grill and cook for 3 to 4 minutes per side, or until the pork is cooked through and the edges have a beautiful, dark caramelization.
Remove the skewers from the heat and garnish with thinly sliced green onions before serving immediately.