Using a large skillet or frying pan, add olive oil and place over medium-high heat. Once hot, add sliced bell peppers. Sauté for 6-7 minutes, stirring occasionally. Add sliced onions, stir and continue sautéing for 10-15 minutes, or until onions and peppers are tender.
Meanwhile, using a small bowl, combine water, soy sauce, lime juice, liquid smoke, cayenne pepper, onion powder, salt and pepper.
Once peppers and onions are tender, reduce heat to low and add liquid mixture; stir until well combined. Simmer for 1-2 minutes, or until liquid has mostly evaporated. Remove skillet from heat and set aside.
For the Flatbreads
Preheat oven to 350°F.
Place flatbreads on a baking sheet and heat in oven for 4-6 minutes, or until hot.
Meanwhile, using a large nonstick skillet, heat frozen chicken strips over medium heat for 3-5 minutes, or until warm.
Remove flatbreads from oven and divide cheese evenly on top. Next, divide cooked onions and peppers on top of cheese. Finally, top flatbreads with chicken strips. Serve immediately.
{Optional} Serve with salsa, sour cream, chopped cilantro and/or guacamole.