Heat stress? (PICS!!!) help..

It appears this plant is having some kind of heat stress or something? I can't figure it out because the temp is 77.0 degree? and the 9 other plants aren't showing any kind of leaf curling at all, only this one? Anyone???

looks fine to me, maybe slightly overwatered her, let her dry out a bit

Definitely not over watered, but if you think she looks healthy otherwise, then? :/