Nut deficiency?

The spot(s) are probably the very start of a calcium deficiency. Up that portion of your fertilizer while maintaining other levels as best you can. The second picture is less clear as to the cause. Paling from inside-out on newer growth hints at a S-deficiency. Epsom salt is an excellent source for that, but also provides Mg... as above, when you increase portion of 'something' you need to be aware of how it impacts the overall ratio of nutes too. As long as mg isn't too high, epsom salt is an excellent option to add S. chlorosis on new growth can also be from too much p and/or k. Too often companies instruct to over-dose these molecules in flower. Too much p or k can also lockout Ca. soil is a bit of an unknown because of how much of a fertilizer charge it is providing in addition to what you add in the water. In soilless/hydro i could simply say make sure Ca and S ppm is 100, P around 40-60 and K ~180ppm and anything drastically off would likely be the culprit. These values are ballparks and local variables like VPD and DLI will impact exact amount you need. If you are in soil you could average out the ppms you provide over all irrigations (e.g. if you only feed every other irrigation, divide your dose by 2) it should average out to a similar amount of mass per week or day etc... soil nutes that need to be broken down before they can enter the plant may need larger doses and this type of guesstimate will fail miserably with that variety of fertilizer ingredient. hydrobuddy is a free app that can calculate/tabulate this stuff from gauranteed analysis labels.