Hey there
What have you been feeding them?
It looks like nitrogen overfeed.
On some pictures in your diary i see the leaves are dark green and shiny + the deformation it seems that you are on the cusp of nitrogen toxicity and it slows down the grow.
Try watering till 20-30% runout with clear PH’d water.
looks normal to me! you know sometimes plants as we humans too grow/look a bit funky but that doesn't mean allways something negative necessarily!✌️🏻 but to be sure always keep an eye on it and check your humidity 60-40% and temp 22-28 and if u want to do it perfectly check a vpd chart from Google 😁 and apply as good you can those value combinations !