Put chopped potato in a pan and cover with cold water. Bring to a boil over medium heat. Cook until tender. Drain the water and let the potato cool. Once cooled, peel and cut into small chunks.
Heat olive oil in a pan and add tofu. Cook until tofu starts to brown.
Add chopped red pepper and cook until crisp tender.
Add soy chorizo and chopped potato and cook for several minutes more.
Add spinach and cook until wilted.
Warm the tortillas on the stovetop or in a dry skillet (without oil). You can also warm them at 20 second intervals in the microwave. Spoon some of the mixture into warm tortillas and serve with vegan sour cream.