Thanks everyone.
I wondered about heat stress too except none of the others (same strain) are showing leaf canoeing and they're all in the same location.
Also agree the color looks a tad light, although not so much in photo #2. Before transplanting I amended the soil based on a lab test, including adding some feather meal for nitrogen and k-mag for magnesium. But it's possible they need more--they've been in the ground over a month now so I topdressed yesterday with more feather meal, plus some alfalfa meal and worm castings too. And added 1T/gallon Epsom salts to their water yesterday.
One thing that makes me think it might be a deficiency is that some of the upper leaves seem like the veins are dark green but the spaces in between are lighter. That combined with the leaf curl makes me suspect a mineral deficiency. Plus I'm not aware that a nitrogen deficiency would cause the leaves to canoe like that.
As far as mites, I'm not seeing any signs but then again I've never had to deal with mites before. I'll check the undersides of the leaves again, it's possible I'm missing something.
I had an Orange Blossom Special that had crinkly leaves last year, never fully solved that, but it thrived and produced beautiful buds. Maybe genetics are partly at work here?
But I'd love to solve this before flowering begins. Figure I've got another 4 weeks maybe...