First prepare the chicken. Whisk the egg, lemon juice, garlic, parsley, salt and pepper together in a shallow bowl. Pound the chicken breasts so that they are roughly the same thickness throughout. Add them to the egg mixture, turning to coat them. Refrigerate and marinate for half an hour at least.

Preheat the oven to 200F/gas mark 6. Line a baking tray with aluminium foil and spray with non-stick cooking spray.

Put the bread crumbs in a bowl with the Parmesan cheese. Dredge each chicken breast on both sides in this, pressing them lightly to help the crumbs to stick. Place them onto the baking tray. Drizzle with the melted butter. (Alternately you can spray them with the low fat cooking spray). Place them in a single layer on the baking sheet.

Melt the butter for the vegetables and mix with the garlic, Italian seasoning and salt to taste. Toss the potatoes with half of this and the green beans with the other half.

Place the potatoes in one layer around the chicken, reserving the beans for later.

Roast the chicken and potatoes in the oven for 15 minutes. Remove from the oven. Push the potatoes to one side and add the green beans around the chicken on the other side. Return to the oven and roast for a further10 minutes.

Remove the tray from the oven again. Push the beans aside to make room for the tomatoes. Add the cherry tomatoes and drizzle with the balsamic vinegar and season with some salt and black pepper. Return the tray to the oven and roast for a further 10 minutes, until the chicken is golden and cooked through, the potatoes are crisp and golden brown and the green beans crispy tender. The tomatoes should be wilted and beginning to caramelise. Scatter some Parmesan cheese over the tray and sprinkle with the flat leaf parsley. Serve immediately with lemon wedges for spritzing over top.