HeatMiser said:
Two things that I can think of...
Calcium deficiency
Mites
Check under the leaves for mites. I highly recommend getting a handheld microscope and inspecting the underside of the smallest leaves since that's where they like to hang out. I'm currently battling a heavy broad mite infestation that I mistook for nutrient deficiency. Hope you don't have mites.
Can't ever remember having a nutrient deficiency ever, as I always start with a good media mix in my containers. Most all my problems come from pests and improper watering, compacted media, to small a container, furry critters...
Have to agree with ya, sure looks like some type of pest, could be broad mites. Without a pic, 12oclock straight down into new growth area of plant, hard confirm it with just the op's first pic...
But other pests can produce similar damage, without scoping the leafs @ least to 40x, will never know for sure... But does it really matter..? As the solution is most always the same for us small garden guys. NEEM, in a soaking drenching dripping spray, this will rescue most plants from almost all soft bodied sucking pests.
When leafs are curled, stunted deformed new growth, especially in the bud tips with an ingrown type look, give broad mite damage a unique look that once one experiences it and figures it out, not soon to forget that signature mite damage 'look'...
LaHeat, Neem spray, then spray again in a few days. First prune off all damaged areas as it will never heal and has toxins from the pests that continue to do damage for days/weeks after they are all dead. Burn or bury the infested clippings. Within 1-3 days of the spray you should start to see a good recovery if it was pests/broad mites.
Spray all plants in the vicinity of any infested plant.
Last year pic of my young SRP infested with Broad mites....