A guess would be that you did not acclimate them enough and they are getting scorched from the sun. All plants should be acclimated first if they came from another location or going from a low light to high light conditions. It is best to do your transplanting on a cloudy day or you can gradually condition the pots by moving them out to brighter light over the course of a week and letting the plants transition to the planting site by leaving them in their pots on the spot you plan to plant them for a couple of days before stressing them out.
Happy gardening in Hawaii. Gardens are where people grow.