Autoflower is 1/4 size of others for every grow

Hi i have been growing autoflowering strains in my slim closet for a half year now i have had this same problem with every grow. I line up 4-5 plants under a sylverstar t-5 4 bulb all the other plants on the ends and even the left middle do fine. On the right side center under the light my plant is always extremely smaller and very dense with leaves. Can anyone tell me why this is?

it sounds like light distribution try rotating the plants every couple days so that all the plants get the same light...

yeah i do that almost every day. It only happens to 1/5 every time and its the exact same spot in the line.