Adding UNcomposted organic matter to potting soil is not a good idea. For one thing, it will likely mold and become slimey and attract insects, and for another, it will cause the nutrients in your soil to be tied up to feed the composting process and your plant will not be able to make use of them until the composting process is complete. "Adding organic matter" to the soil means adding fully composted organic matter, not kitchen scraps.
That having been said, while there does seem to be some damage to the plant, as was mentioned, it is showing some new growth. I agree that adding better drainage to the potting soil is probably a good idea, especially if it is outside and is constantly being rained on.