Why doesn't my marinade have any taste when I cook it?

I usually thaw some chicken (it's frozen), mage some Korean BBQ marinade onto it and let it sit in the fridge covered for a day. The next day, I cook it in a wok with some olive oil and it looks completely white when it's done (the marinade is brown and I'm guessing the chicken should be tanned). What am I doing wrong and why does this chicken not have any delicious Korean BBQ flavor?