Preheat oven to 350 degrees.
Top each flatbread with ¼ cup Ranch dressing and spread thinly over the flatbread.
Top with shredded chicken, wilted spinach, onion, cherry tomatoes, and shredded cheese.
Bake the flatbreads for 10-15 minutes, or until the cheese has melted and started to bubble.
Remove and cut into pieces for serving.
