Heat a tablespoon of oil in the bottom of a heavy-bottomed frying pan or iron skillet. Add a package of vegan beef-style seitan strips (about 3 cups).
Stir well to coat with the oil, then sprinkle with 2 tablespoons of gyro seasoning and cook over medium-low heat for about 5 minutes until warm and slightly browned. Turn off the heat.
Wash and slice tomatoes, cucumbers, and red onions, then prepare the vegan tzatziki sauce if you are making it homemade.
Warm 4 pieces of pita bread in the microwave for 30 seconds or warm them on a dry skillet on the stovetop.
Place the warm pita on a plate and lay a large handful of the seitan strips in the center of the pita with some diced tomatoes and cucumbers, then top with a few tablespoons of vegan tzatziki sauce.
Fold up the bottom and then roll it into a wrap. Serve warm.
Notes
Cook the faux meat over medium heat to allow the spices to warm up and infuse into the seitan.
Don't overcook the seitan or you may burn the gyro spices.