Preheat your oven to 425°F.
In a shallow bowl, whisk the egg white and add a pinch of salt and pepper.
In another plate, mix the panko breadcrumbs with the chopped fresh herbs.
Dip the chicken breast (flattened slightly for even cooking) first in the egg white, then coat thoroughly with the herb-panko mixture.
Heat olive oil in an oven-safe skillet over medium-high heat. Sear the chicken for 2-3 minutes per side until golden and crispy.
Transfer the skillet to the preheated oven and bake for 10-12 minutes, or until the chicken reaches an internal temperature of 165°F.
Meanwhile, toss the bell pepper, zucchini, and red onion with a little olive oil, salt, pepper, and lemon juice.
Spread the vegetables on a baking sheet and roast in the oven for about 10 minutes, until slightly tender and caramelized.
Plate the roasted vegetables and slice the crispy lemon herb chicken on top, drizzling any remaining lemon juice over the dish.
Serve warm and enjoy your balanced, flavorful bowl.