That is indeed too much sun damage. Try to find a more part shade area. I grow mine outdoors, but I have the canopy of trees that provides dappled shade to my jades during the hottest part of the afternoon and have endured nicely our triple digit heat and beyond. I typically do a once a week thorough watering for them when our forecast calls for extreme dry heat.
If these jade plants of yours are still relatively new, all the more you have to acclimate them slowly to outdoor conditions. In my area they are more actively growing during the cooler months, but they do take up water eagerly during the super hot days, so you can see good thickening of the trunk. Also try to water directly the media, do not spritz on the leaves, their stomates are closed during daytime, and it will lessen chances of fungal attack.
At times too, the succulents tries its own coping mechanism, it will drop the lower, older leaves, and will just sustain the ones nearest the tip, the rosettes will be a tighter growth. It is trying to conserve its resources, so do not be tempted to overwater when you see that.
The color of your jades stem, is still green, so it is still very young, I find that once they start forming that harder, bark cover on their trunk, then they are better able to cope with the extremes of the weather. So best to position in a good light area but in part shade for now.