you should definatly check for mites and keep those outside untill you do.
imo those plants look starved for calcium maby phosphate and probably nitrogen... its possible the clawing is a result of that, but i doubt it, unless some real acute deficiency cropped up between the newest growth and the last set of non deformed leaves. did you flush them real hard or transplant them into a soil without any nutrients recently?
that clawing down of the leaf margins is truely the halmark of mites... they like to fuck with the newest growth since its tender and easy to attack. calcium effects the midrib the most causing distortion from the inside area of the leaf outwards towards the margins. phosphate can cause that very dark coloration of your leaves so look at that too.
spiro is not approved for use other than ornamentals... unless something has changed. use abamectin or what ever else. is azamax even used on mites?