While the greens cool, add the ground turkey, flax seed, salt, pepper and thyme to a large mixing bowl and combine. Add the greens and mix until well incorporated. Form the mixture into 10-12 large meatballs.
Place the halved squash, cut side down, on one half of the sheet pan. Using a small knife or fork, pierce the squash in several places. Place the meatballs on the other half of the sheet pan. If desired, sprinkle each meatball with a pinch of almond meal to add some texture.
Bake the sheet pan meal at 400 for 30-35 minutes until the meatballs are browned on top and cooked through and the squash is fork tender.
Allow to cool slightly, flip the squash over and using a fork, shred the squash to make "spaghetti."
Serve immediately or allow to cool completely then store the meatballs and squash separately to enjoy later.