The ones on the big ring are a "shift gate" -- intentionally shortened to aid shifting. The other two rings look like they do have some problems, though. A file could take care of the weird "split" on the small ring's funky tooth. The middle ring, though... I'd probably toss the crankset.

If you're looking for something on the cheap, I've got a similar-quality Sakae XCT crankset I'll never use. Same 28/38/48 chainring configuration. I can send it to you for the cost of shipping.