Place the chillis, capsicum, garlic, paprika, juice, parsley and oil in food processor and process until almost smooth.
Using kitchen scissors, cut chicken down the breastbone. Open out chicken, and press down heavily to flatten. Cut deep slits in the thickest part of the chicken breasts.
Rub peri peri mixture all over chicken. With breast side up, place chicken on a roasting rack over a large baking dish. Bake in 190°C preheated oven for 1 hour and 15 minutes, or until cooked through. Serve with lime.