01 -
Combine chicken strips with garlic powder, paprika, salt, and black pepper in a bowl and toss until evenly coated.
02 -
Heat 1 tablespoon olive oil in a large skillet over medium heat. Add sliced onions and green peppers. Cook for 6 to 8 minutes, stirring occasionally, until vegetables are soft and caramelized. Transfer to a plate and set aside.
03 -
Add remaining 1 tablespoon olive oil to the same skillet. Increase heat to medium-high and add seasoned chicken strips. Sauté for 6 to 7 minutes until the chicken is golden brown and cooked through.
04 -
Return sautéed peppers and onions to the skillet with chicken. Toss together for 1 to 2 minutes to combine and heat through.
05 -
Slice each sub roll lengthwise, ensuring not to cut all the way through. Generously spread mayonnaise onto both inner sides of the rolls.
06 -
Evenly distribute the hot chicken and vegetable mixture into the rolls. Place 2 slices of Swiss cheese on top of each sandwich.
07 -
Arrange the open-faced sandwiches on a baking sheet. Broil under high heat for 1 to 2 minutes, until the Swiss cheese is melted and bubbling. Serve immediately.