Preheat your oven to 400°F (205°C). Line a baking sheet with parchment paper.
Slice the chicken breast into strips or bite-sized pieces for even cooking.
In a shallow bowl, whisk the egg white and set aside. In another bowl, place the panko breadcrumbs.
Dip each chicken piece in the egg white, then coat with panko breadcrumbs, ensuring an even layer.
Arrange the breaded chicken on the prepared baking sheet.
In a small saucepan over low heat, combine honey, rice vinegar, diced red bell pepper, minced garlic, and grated ginger. Allow the sauce to simmer gently for 3-4 minutes, stirring occasionally until slightly thickened.
Brush the chicken pieces with a thin layer of the sweet and sour sauce.
Bake the chicken in the preheated oven for 15-18 minutes or until the coating is crispy and the chicken is cooked through.
Meanwhile, toss the green beans with olive oil and a pinch of salt. Spread them on a separate small baking tray.
Add the green beans to the oven during the last 10 minutes of the chicken's baking time and roast until tender with slight crisp edges.
Once cooked, drizzle any remaining sauce over the chicken for an extra burst of flavor and serve alongside the roasted green beans.