Slice the chicken breasts lengthwise to create 2 thinner fillets. Add all of the ingredients to a bowl.
Mash the peppers and whisk. Add the chicken and toss well to cover in the marinade. Cover and let sit for 30 minutes, or marinate in the fridge for 12-24 hours.
Place a non-stick pan or heavy skillet over medium-high heat. Add three of the chicken fillets and cook for 4 minutes per side until slightly charred and cooked thoroughly.