Whisk together the soy sauces, lime juice, garlic, cummin, paprika, oregano, pepper and the oil.
Put the chicken in a sealable bag and add the marinade to it. Seal the bag and marinade in the fridge from 8 to 24 hours.
Remove the marinade and dry the chicken. Pre-heat the grill pan on medium high and add the chicken to it.
Cook from 7 to 10 minutes each side.
Squeeze lime juice over the chicken and serve.