Preheat oven to 400℉. Preheat a large oven safe skillet to medium-high heat and add the olive oil. While skillet is preheating, pound chicken breasts to flatten them if they are thick. Salt and pepper the chicken breasts.
Add chicken to pan and cook 4-5 minutes per side or until no longer pink.
Turn off the heat and pour BBQ sauce on each chicken breast evenly.
Sprinkle the cheese evenly on the chicken breasts and top with the crumbled bacon.
Bake the chicken for 2-3 minutes until cheese is melted.
Top with bacon, diced tomatoes, and sliced green onions. Serve.