Cook the spaghetti squash and chicken beforehand. An easy option is to cook either or both in the Instant Pot.
Prep the spaghetti squash by pulling the squash out of the skin.
Shred the chicken.
To make the sauce, pour the heavy whipping cream into a large skillet or saucepan.
Stir constantly to avoid scorching, and allow the cream to come to a boil.
Slowly whisk the cheese into the simmering cream. The sauce will start to thicken.
At this point, whisk the salt and pepper into the sauce.
Use tongs to add spaghetti squash to your plate.
Add a handful of shredded chicken on top.
Finally, add Alfredo sauce to your liking.
Top it all off with a light sprinkling of parsley.