Slice chicken breasts into very thin strips lengthwise. Cut each strip in half lengthwise again. Imagine the thickness of fajitas from Mexican restaurants when you’re cutting.
Slice the peppers into thin strips.
In a measuring cup, combine all remaining ingredients and whisk together to create the marinade
Place the peppers and chicken strips in a large bowl or ziplock bag. Pour the marinade on top and refrigerate 30 minutes (up to overnight).
Preheat oven to 425 degrees.
Using a baking sheet with a roasting rack on top, spread pepper and chicken mixture in an even layer.
Bake 15 minutes. Put under broiler for 5 minutes to crisp up edges.