I wouldn't throw that out. Probably just needs a bit more nutrition than what you are providing, of which there is no info. if this is soilless and you haven't fertilzied, this would explain everything. I doubt it is variegation, but that's possible too. If the light is too intense, that's a possibility, but i don't think that's the case here due to other visible related factors.
While this depends on the prices you pay for seeds, obviously, a good practice it to always germinate more seeds than you need. This way you can cull the weak.
Also, don't use a huge pot for seedlings. No matter what bro-science nonsense says about it, it's a bad idea all around, even if it is autoflowers. Potting up has never shocked a plant in my 6-7 years of growing, so it's a total bogeyman of pop culture and not based in facts. Potting up should not be stressful to the plant as long as you don't purposfeully molest the rootball with some G.I. Joe Kunf Fu Grip (tm) nonsense, or don't do it when it is bone dry with few roots to hold itself together and all is well, lol.
Watering sucks with a big pot and small plant. It's less ideal for rootball development, too. Lots of negatives. A lot easier to control nute content of a small seedling pot, too, which relats to the suckiness of watering a tiny plant in a huge pot. If you water all the way down to avoid training superficial roots, it also stays wet for extremely long periods of time given limited roots -- even if you only water a small area around theplant.... Just stagnating water in that pot for a week or more growing god knows what while it sits there sopping wet. Just as you don't want to leave irrigation water out for many days, water stagnates in the pot too if the roots can't drink it down at a decent pace.
Also, tiny seedling pots means you don't waste as much substrate if a seedling is retarded and you throw it out. This one looks fine despite possibly being deficient in nitrogen.