PREHEAT oven to 400°F.
CUT spaghetti squash in half lengthwise with a sharp knife. Scoop out the seeds with a spoon.
MIX olive oil, ginger, a small pinch of salt, and a pinch of pepper in a small bowl. Brush onto the cut sides of the squash. Add any remaining seasoning in the centers of the squash halves.
PLACE on a baking sheet cut side up. Roast for 30-40 minutes until fork tender. Set aside for a few minutes until cool enough to handle.
COMBINE sesame oil, rice vinegar, coconut aminos, green onions, salt, and pepper in a large bowl.
SCRAPE the strands out from the sides of the squash with a fork. Add to the bowl with seasonings and toss until well combined. Sprinkle with toasted sesame seeds.