Preheat oven to 375 degrees. Season chicken with salt and pepper to taste. Grill or saute in a pan over medium-high heat for about 3-4 minutes each side or until cooked through. Dice chicken and set aside.
Spread cheese over the flatbreads. Top with garlic, chicken, tomatoes, and bacon. Place on a baking sheet and bake for 15-18 minutes until cheese is completely melted.
While flatbread is baking, mix up the chipotle ranch sauce. When flatbread is finished baking, top with avocado, then drizzle with chipotle ranch dressing and cilantro and serve immediately.
Notes
I put the chipotle ranch in a sandwich baggie and just cut a tiny corner off to squeeze it out then drizzle over flatbread