Help with one leaf seedling

Growing 4 plants 2 zkittles & 2 white widow seeds from nirvana in a 4 x 4 tent, 1000w yehsence light from amazon 24” away from the seedlings been watering daily with a spray bottle, temperature 72° humidity 65% using fox farm happy frog soil in solo cups started all seeds at the same time have not given any nutrients I’ve never seen a seed grow like this .. has anybody else seen this? .. all my plants seem to be growing fine except for one

So I'm not running the same strains as you as my example here is that of the green crack. Also I am definitely not the most knowledgeable here either but. This is a Green crack x Ak-47 strain. The plant I am showing is in the top of the picture and you can see it was well behind her other sisters. It suffered from helmet head and has flourished since then. Just keep taking care of it and cheer it on lol I am sure she will flourish as well. Hope this helps! Have a nice day.