Step 1: Boil cubed potatoes till partially cooked, about 7 minutes.Drain very well.
Step 2: Heat a little oil in a large skillet and fry potatoes until golden brown and crispy on all sides. Transfer to a paper towel lined plate.
Step 3: In same skillet, heat a little more oil and sauté onion and pasilla pepper until onion begins to turn translucent. Transfer to plate with potatoes.
Step 4: Remove soy chorizo from casing and add to skillet. Cook about 4 to 5 minutes, breaking up any large chunks with the back of a spoon.
Step 5: Add potatoes, onions, and peppers back into skillet with chorizo and stir until well combined. Top each serving with a fried egg and place buttered seasoned toast on the side.