So I'm assuming this sprocket is no good. I got some new tires mounted yesterday and was about to put them back on and noticed this. One tooth is chipped and another one next to it is scratched pretty bad
Time for new chain and sprockets. You've got something going on with that wear mark on the tip, seriously out of alignment ?
I'd run that without hesitation, front sprocket, probably not, the rear? No problems as long as the chain doesn't bind going on or off those teeth.