leaves look weird

When the leaves look weird like this...
Is it because of a sucking insect?
Or the sun?
SAM_1919.jpg

SAM_1921.jpg
 
It's kind of hard to tell what's going on, except for the leaf in the lower-right corner. That "puckering" is an early sign of fertilizer burn. Back off the fertilizer and things will be ok. 
 
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