Preheat the oven to 400°F.
Season the chicken breast with salt, pepper, dried herbs, and a drizzle of olive oil.
Roast the chicken in the oven for 20-25 minutes or until fully cooked. Let it cool slightly, then slice into strips.
While the chicken is roasting, core and thinly slice the apple, and slice the red onion into very thin pieces.
In a large bowl, combine the mixed greens, apple slices, red onion, and chopped pecans.
Prepare a simple dressing by whisking together lemon juice, olive oil, a pinch of dried herbs, salt, and pepper.
Toss the salad with the dressing, then top with the sliced herb-roasted chicken.
Serve immediately and enjoy the blend of savory chicken with the crisp sweetness of apple and the crunch of pecans.