Pepper look wilted

[drainey0]

I don't know what to do the bottom leafs of one of my pepper plants look wilted during the day and look just fine during the night. Non of my other plants look this way it just the one and it only during the day time and again looks like all my other plants during night time

[rainbowgardener]

It's a reaction to the heat and probably drying out a little in the daytime. But if it perks up again at night, it is OK.