Preheat the oven to 400ºF. Line a 9 x 13" baking dish with aluminum foil or parchment for easy clean up.
Trim the stems from the squash, then slice them in half lengthwise. Use a small metal spoon to scoop out the seeds & insides of the squash* to make room for your stuffing. Lay the squash "boats" into the lined baking dish.
In a small bowl, prepare your "enchilada sauce" by mixing the tomato sauce, broth or water, and spices until smooth. Add extra seasonings to taste.
In a larger bowl, mix the shredded chicken with diced green chiles, onion, and 1/2 of the sauce. (You can also add a scoop of coconut cream plus a pinch of salt for a little creaminess!)
Evenly distribute the chicken mixture into the boats (I over-stuff mine). Spoon the remaining 1/2 of enchilada sauce over top of each "boat", then top with sliced black olives.
Transfer to the oven & bake at 400ºF for 25 minutes. Serve hot, garnished with sliced green onion, and avocado or guac if you've got it!