To make the salad, combine lentils, currants, pepitas, chilli, onion, mint, parsley and orange rind in a large bowl.
To make the dressing, place the orange juice, cumin, olive oil, sugar and pepper in a screw-top jar and shake until well combined. Pour the dressing over the salad just before serving and toss to coat well.
Preheat a barbecue flat-plate or large non-stick frying pan on medium-high.
Lightly spray with oil. Season the fish with cracked pepper. Cook on heated barbecue or in frying pan for 2-3 minutes each side or until light golden and just cooked through. Serve fish with lentil salad.