Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
In a shallow bowl, combine the panko breadcrumbs with a pinch of salt and your favorite dried herbs if desired.
In another small bowl, lightly whisk the egg white until slightly frothy.
Dip the chicken breast into the egg white, ensuring it is well coated, then dredge it in the panko breadcrumbs, pressing lightly to adhere.
Place the coated chicken breast on the prepared baking sheet and lightly spray or drizzle with a small amount of olive oil for extra crispiness, if desired.
Bake the chicken for 20-25 minutes or until the internal temperature reaches 165°F (74°C) and the coating is golden and crispy.
While the chicken bakes, slice the bell pepper into strips and toss them with a little salt and pepper. Roast in the oven on a separate tray or in the last 10 minutes alongside the chicken until slightly charred and tender.
For the sweet and sour sauce, in a small saucepan over low heat, combine the pineapple juice, low sugar ketchup, and honey. Simmer gently for 3-5 minutes, stirring occasionally until slightly thickened.
Once the chicken is done, slice it and serve alongside the roasted bell peppers. Drizzle the homemade sweet and sour sauce over the chicken, and enjoy your flavorful, guilt-free meal.