issue Is this scale?

[Purgitoria]

Is this scale? On the underside of most of my pepper plants I have these white deposits that look too small to be scale and it seems to affect my Fatalii and Nai Miris the most and my 7pot doesn’t seem to have any. There is no sign of whitefly or aphids and the tops of the leaves look completely healthy.

 

[HerbCasa]

Maybe try to get a look at it under a magnifying glass

 

[Purgitoria]

Maybe try to get a look at it under a magnifying glass

I took a look with the magnifying glass but it did not really help me much. It is almost like a hard mineral deposit as it is hard and rough to the touch if I scrape at it with a toothpick but does not come off and equally if I rub it with a wet cotton bud it feels hard but does not seem to dissolve when wetted and rubbed.

 

[The Hot Pepper]

Likely:

Edema In Plants | Treating Plant Edema (With Pictures) - Pepper Geek

If you suspect you have edema in plants, don't worry! Read our article on how to treat plant edema in peppers and tomatoes on Pepper Geek.

peppergeek.com

Possible:

White rust

White rust (Albugo candida) is a common but usually not serious disease. Local infection appears as pustules or "blisters" filled with sporangia on leaves, smaller stems, and floral parts. Pustules measure approximately 1-2mm in diameter and are white or creamy yellow. Systemic infections result...

gardener.fandom.com