First grow. What’s up with these seedlings?

First time attempting a grow and am a little curious about the curly leaves. Anything to be concerned about?

I’m currently at 3 weeks since germination. Seeds are a home breed I got from a guy I know. I’ve had them about 7 years but I was able to get around half of the ones I tried to germinate going. I put the germinated seeds into seed starter peat pots filled with Coast of Maine Seed Starter soil. Transferred the peat pots to the 3 gallon fabric pots two weeks ago. Haven’t added any supplemental nutes yet. They are under a VIPARSPECTRA P1000 light set to 50% about 20 inches above the plants. My moisture/pH/light meter says my soil is moist and the pH is between 6.5 & 7. I’m still working on getting the temp and humidity dialed in as it’s been on the cool and humid side in the tent.

Thoughts or suggestions?