Preheat the oven to 425°F or 220°C
Rinse the whole chicken and then dry. Season it with salt and pepper and put the half lemon inside.
Now tie the chicken legs with kitchen string and put the chicken in a roasting pan.
In a saucepan, melt butter with olive oil and squeeze the remaining half lemon on it.
Brush this mixture on the chicken and bake in the center of the oven for about 50 mins.
Remove chicken from the oven and let it rest for 5 mins.
Serve with roast potatoes and fresh salad.