I have 14 - 2wk old seedlings from two strains. Each strain has a mutant... All the other plants under the same care look pretty normal. Both of my mutants look like your plant. It's possible that's what is wrong with your plant.

Here's a couple pics of plants that have heat related issues. You decide... does this look like your plant?

Attachment 274522

If you have a mutant, I couldn't tell you how it will end up. But, I have two now so I'll know next time. imp: