Preheat your oven to 400°F (200°C).
Place the naan breads on a baking sheet and brush each with olive oil.
Spread half of the tzatziki sauce evenly over each naan.
Top each naan with shredded chicken, diced cucumber, cherry tomatoes, and red onion.
Sprinkle mozzarella cheese over the top of each naan, followed by dried oregano, salt, and pepper.
Bake in the preheated oven for 10-12 minutes, or until the cheese is melted and bubbly.
Remove from the oven and let cool for a minute. Garnish with fresh dill or parsley if desired.
Slice and serve warm.
