Poke each sweet potato with fork all over, and wrap loosely in a paper towel. Par-bake potatoes until beginning to soften, but the inside is firm and not crunchy. ~4-5 minutes depending on microwave and size of potatoes.
Grate the potatoes using a box grater. It's fine if some of the skin gets in, if some of it peels away remove it if you want.
Heat a generous Tbsp of oil in a skillet over medium heat. Once hot, add the shredded potato, salt and pepper. Use a spatula to mix evenly and then spread and flatten the shredded potato across the surface of the pan.
Disturb as little as possible to form a nice crust--5 minutes or so.
Crumble the chorizo into the pan and use a spatula to "chop" together the potato evenly, so that the crispy bits are incorporated throughout along with the chorizo. Cook for 4-5 more minutes or until heated through. Optionally, add more oil to the sides of the pan if the moisture gets low or the edges begin to char.
Serve with preferred eggs for a hearty, robust meal!