EighthInch makes a decent, inexpensive 130bcd chainring.

Before replacing anything, try taking just a little bit of the tension out of your chain and using a wet lube instead (but don't overdo it or you'll have a real mess). Most wax-type lubes are designed to dry up and flake off - taking dirt and crud along with it - but need to be reapplied way too often for my liking.