Preheat the oven to 425°F (220°C).
Wash and halve the baby potatoes. Toss them in 1 tsp olive oil, a pinch of salt, pepper, and half of the mixed herbs.
Place the potatoes on a baking sheet and roast in the oven for about 25-30 minutes, until golden and crispy, stirring halfway.
While the potatoes roast, prepare the chicken. In a small bowl, mix the juice of half a lemon, 1 tsp olive oil, the remaining herbs, salt, and pepper.
Coat the 4 oz chicken breast in the lemon-herb mixture. Let it marinate for 10 minutes.
Heat a skillet over medium-high heat and cook the chicken for about 5-6 minutes per side, or until fully cooked and lightly browned.
Steam or roast the green beans with a pinch of salt for about 8-10 minutes, until tender-crisp.
Plate the roasted potatoes and green beans alongside the sliced lemon-herb chicken. Serve warm and enjoy the fresh, crispy, and zesty flavors.