Grilled Eggplant Gyro

Ingredients:

4 pita rounds
Tzatziki
Previously fried eggplant 
1 large onion, chopped
2 medium tomatoes, diced
Crumbled feta cheese
Dried Greek Oregano

Place a piece of aluminum foil down on a flat surface. 
Put a piece of bread in the center of the foil. 
Spread a generous amount tzatziki across the middle of the pita bread. 
Top with onion, tomato, and some of the fried eggplant. 
Sprinkle with feta cheese and drop another spoonful of tzatziki over the top, if desired. 
Sprinkle some oregano over all the ingredients.
Roll the gyro sandwich and wrap it in aluminum foil so it can hold the shape. 
Repeat until you've used up all the bread.