The pictures scream nute burn.... if I was you... give your plant 1 maybe 2 good flushings, and it should be ok.
The burn spots will NEVER recover, but the new growth should be fine.
ps: if you're using a soil with a time release fert, or one that has a water release fert like Miracle Gro.... then DO NOT FLUSH... but otherwards just flush and they should be fine.
pps: flushing means adding 3x the amount of volume of water, that your pot can handle... so say you have a 5gallon pot... give 15gallons of water..
Peace