Preheat oven to 425° + lightly oil small baking dish

Heat 1 tbsp oil in skillet over med-high, pat chicken dry + season with salt/pep; cook chicken 4-6 min per side until fully cooked, no pinkness remains + internal temp is 165°; place in baking dish

Wash peppers, cut off stem + discard seeds, then cut into bite-size pieces; heat 2 tsp oil in skillet over med-high, add peppers to pan, season with salt/pep + sauté 4-5 min or until tender

Toss peppers with olives + 6 tbsp sauce; layer sauce over chicken, sprinkle on 6 tbsp cheese + bake 12-15 min until hot