What's up with these 2 seedlings?

[Swagflu]

Do they look nute burnt? I have a bunch of others going but only these 2 are showing these weird signs.. Mutant? Nute Burn? Those are the only two things I can think of.. .. The yellowing on the new growth tips makes me think nute burn.. but again I have a few dozen others that are just fine and nice and healthy, these are the only 2..

Any ideas? I use RO water, no nutes yet except for the ewc is in the soil already

 

[EvilTwin]

Swag...
The little ones are telling you they need food...is how I see it.
ET

 

[Hydro-Soil]

Swag...
The little ones are telling you they need food...is how I see it.
ET

Right on the money.

If you don't feed them a little (weak, not strong) they're gonna finish eating the nutrients from those first leaves (which is why they're turning yellow) and then they'll brown and crisp up before falling off.