Preheat your oven to 200°C/400°F/gas 6.
Arrange your oven shelves so the roasting tray can sit at the bottom.
The chicken will go directly above it on the bars of the shelf.
Pat the chicken dry with a paper towel.
Score the legs with a sharp knife.
Poke the lemon with a few holes and place it inside the chicken’s cavity.
In a deep bowl, mix tomato paste, ginger garlic paste, ground cumin, ground turmeric, ground coriander, garam masala, red chilli powder, lemon juice, and yogurt.
Rub the paste evenly all over the chicken.
Ensure it’s well-coated.
Place a large roasting tray at the bottom of the oven, lined with kitchen foil.
Position the chicken directly on the oven shelf above the tray.
This allows the juices to drip into the tray below.
Roast the chicken for 1 hour and 20 minutes or until the chicken is golden and cooked through.
Rest the chicken for 10 minutes before carving.