Make the sauce: Heat the coconut oil in a small saucepan over medium-low heat. Add the ginger and garlic and sauté until fragrant. Add the red pepper flakes, coconut aminos, and fish sauce and stir to combine. Add the toast sesame oil and honey and whisk over medium heat until they honey has completely dissolved and the sauce starts to bubble slightly. Reduce the heat to low and cook, stirring every so often, until the sauce has reduced and thickened enough to coat the back of a spoon. This can take up to 20 minutes.
While the sauce is reducing, grilling the chicken wings. Preheat a grill to medium (400 degrees F). Rinse the chicken under cold water, pat dry with a paper towel, and sea with salt. Grill for 20-25 minutes, until cooked through, turning every 5 minutes. (Most grills have hot spots and cooler spots, so moving the chicken around a bit helps to ensure every cooking.)
Toss the chicken wings with the honey sesame sauce, sprinkle with sesame seeds, and top with sliced scallion.