A few good points above by the other members.

Putting straight out into the hot sun from indoors is a bad idea. Give it 30 minutes under the sun for the first day or 2 then up the time slowly over a week or two.

Also, I just transplanted my plants this morning into their 2.5 gallon buckets. This is a stressful event for the plants and it can take a week for them to begin growing again as normal.

Try to just add water to the plants for that week to make them stress as little as possible. Also worm castings and too much bat guano can lock out nutrients if the soil has too much fert in it.

The very first picture looks like a bad case of heat stress.

Be careful in adding bat guano as it can burn the plants. Also you said the roots were covering the inside of the pots. Do you think you left the plants too long in the old pots ?

Hopefully they will fight back and they will be fine soon. One member here advised to do a flush. I think he might be right.

Take care