In a food processor, blend together parsley, coriander, garlic and olive oil until smooth. Add the lime juice, lime zest, salt and pepper and combine well.
Preheat oven to 400 degrees F. Pat dry the fish with paper towel. Season lightly with salt and black pepper. Grease the bottom of a baking dish lightly with cooking spray. Place the cod fillets in the baking dish and spread the herb sauce mixture all over the fillets.
Place on the middle rack of the oven and bake until cooked through, about 25-30 minutes. Serve the fish immediately with couscous or Mashed Potato.