Not sure about anyone else but i'd also cut off those 3 chewed up looking bottom leaves, especially if they're touching the soil. Chewed up leaves like that can unnecessarily divert energy towards trying to heal, as opposed to using that energy for newer, healthy growth.
You may have multiple symptoms there, which may or may not include overwatering, fertilzer burn, lack of a particular nutrient, bacterial/viral. It would be tough trying to treat all of those possibilities at once but good luck either way.
The easiest one to start with is cutting back on water as cjbrewer said.