Same questions as before but updated with newer photos - the brown spots are starting to appear on other plants, but it doesn’t look like mites. The other plants don’t have the twisted leaves (just the Californian Snow), so might be different issues.
Brown spot look like small calcium deficiency. Molasses are your freind, read about it :)
Blackstrap Molasses 3-5ml : 1L of water.
Or any calcium fertilizer, calmag, magicalc, etc.