I have three plants, two of which were moved in early stages of growth. The one unmoved is fine, but the other two are stunted in growth and have some yellowing and dying leaves on the base. Only the unmoved plant has fruit.
Zucchini Plant Stunted and Leaves Yellowing – No Fruit
Certified GKH Gardening Expert
The plants that were moved are likely suffering from transplant shock. There is little you can do but wait it out to see if their roots take hold. Just make sure they have water. Since they are newly transplanted, I would recommend using a fertilizer that is higher in phosphorous. This will help them grow stronger roots and get established better. Fertilize at half strength though, so that the fertilizer does not burn the roots while they are adjusting. Hopefully, this will take care of it.