Cook the squash: Preheat the oven to 350 degrees. Cut the spaghetti squash in half lengthwise. Scoop out the seeds. Rub ¼ tablespoon of olive oil on each half and sprinkle with ¼ teaspoon of salt and ⅛ teaspoon pepper. Place in the oven, flesh side up, and roast for 30 minutes. Let the squash cool and scrape out the strands. Release the excess liquid from the squash strands.

Whisk the eggs in a large bowl and stir in the spaghetti squash.

Add the chicken cubes, blue cheese, and buffalo sauce to a bowl and stir to combine.

Pour the chicken into the squash mixture and stir to combine. Prepare the cups and bake: Place an even amount of the chicken and squash mixture into each cup of a well-greased, 12-cup muffin tin. Bake in the oven for 30-35 minutes until the edges have browned and the middle of the cups are set.