Pineapples grow abundantly in my homeland, and I find them under full sun, temps through the roof, humidity very high, rains a lot. Grown more in the cooler mountain regions.
Since it is now summer, I would water that plant daily. So far it looks quite okay to me. It is from the Bromeliad family, so it does like a lot of water during exceedingly hot conditions.
It would be better to be out of your greenhouse so there is much better airflow around it even if it is very hot outside.
