Can you pray too hard?

I agree with Huntablunt. Too much light. That much praying and leaf tips clawing up means shes trying to lower the space on the leaves to take in light. You say the others are fine. What is the relationship to the light. Is this one in the center of the light? Lights usually have a hot spot in the center. So what is good for the plants on the outside could be too much for one in the center. Can also have hot spots in other places than the center. There are apps you can use on your phone to gauge light intensity. I dont know them off hand, cause I bought a par meter to be more accurate with mine. Apps will work too though, just takes a little trial and error. Can try swapping it with another plant and see if it works itself out. Some genetics are better than others even from same seeds. All plants have differences, just like siblings do. Plant may just not be able to take the same amount of light as the others. You may find moving it to another location with less light works and the one you put in it place can take it. Also, it wont be long before it wants more light anyway. Once veg stage ramps up it most likely will lay back down. However if you are battling a hot spot, when you adjust the lights to get the others where they need to be, it may be too much again for the one in the center. I just ran into this with 5 plants in 5 gallon pots in a 4x4 tent. The one I had in thr center was shorter and taking a bit of a beating with the light. The other plants loved where they were so they grew fast. Once they started to overtake the center plant, it gave enough shade to the center plant and it took off. Mind you it grew away from the center of the light and into the other plants. My personal feel was I could have done the same with only 4 plants, but I run photos. With autos, you need no stress. Curling leaves is stress. Any stress on an auto can disrupt you final yield since they are on an internal time clock once they pop. There's really no margin for error without affecting yield, minus lst. Yes you can still get a decent product on an auto that was stressed. So dont panic. Panicking usually makes things worse and causes a negative impact. If it were me, I would swap that one with another one. If it straightens itself out and the one in its place doesnt do the same thing, you're good. If the new one starts to do the same, you've got a hot spot. When figuring out which one to switch with, id look for the one with the fattest leaves. Fat leaves usually indicates looking for more light. Just my thoughts. Best of Luck! Happy Growing!

If it looks like the plant is closing itself, it is because of too much light. Especially when just germinated they can be very sensitive. Either decrease light intensity or lamp distance

Not all praying is a good thing. too little light will cause exaggerated praying that isn't necessarily a positive thing, but will correct itself with a little stretch.. or you adjusting light. Too much light will actually cause leaves to push each other upward - moreso with a smaller plant. In the end, how it grows is verification of light being in harmony with climate and ambient co2. too much or too little is relative to that and it is itself variable. The more consistent those variables are, the more consistent the plant will be. lots of moving chairs here when it's an open-ended question. existing node spacing says it was getting the right amount.. some internode forming but not stretched out. Assuming you didn't make any massive change to light intensity already, I'd wager this plant is about to need more light. However you ramp up to full vege light, time to start that process. unless you are growing smaller plants on a faster timeline, this early node spacing can be used as trial and error for light intensity. They won't be used in any larger plant anyway.. doomed to be lollipopped. No biggie if morphology isn't exactly what you want, but will show you the path to it relative to the environment you provide. Get it growing the way you want, take a measurement, even klux would be sufficient for this context, and maintain. May see seasonal differences, but shouldn't require much adjustment once it's worked out.