I apologize for my lack of information.

The plant is in a raised bed but more of a pot type box with a bottom. Potting mix soil. I used a granular fertilizer. I water when the top inch or two is dry. Usually every later afternoon when plants are officially shaded. Good drainage in the box.

The leaves are at the bottom of the plant that are edge crispy.

I can't seem to find the reason for the stress, if that is the case.

From what I understand that could be normal . When the plants is developing fruit, it's sucking the nutrients out of the bottom leaves first. The white spores I have no idea.

You don't show the rest of plant !!! How is the rest of plant doing ??!

But as far as those leaves are concerned, they are partially dead and drying up slowly from the edges towards inside.