Preheat oven to 425°F. Place a large baking sheet in the oven to heat up.
Mix olive oil with minced garlic in a small bowl. Brush one side of each lavash bread with the garlic oil.
Remove hot baking sheet from oven and carefully place lavash bread on it, oiled side down.
Brush the top side of lavash with remaining garlic oil, then top with shredded mozzarella, leaving a small border around the edges.
Distribute shredded chicken, bell pepper, red onion, spinach, and olives evenly over the cheese.
Sprinkle crumbled feta over the top and season with oregano, salt, and black pepper.
Bake for 8-10 minutes until the edges are golden and crispy and the cheese is melted and bubbly.
Remove from oven, let cool for 1-2 minutes, then slice and serve immediately.