Quick diagnosis?

1st gro, all the plants look nice except two of them. Pics are attached. Wondering if anyone can take a look and see what the problem might be.

400w MH right now theyre approaching 2 months from seedling, temps vary from 68-78 depending on the time of day.

PS Back right and middle front are the 2 problem plants








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cmon someone has to know why the leaves on the middle pic are colored so weird

Because they would like some magnesium in their diet.
Dissolve 1/4 teaspoon of Epsom salts in a gallon of lukewarm water and foliar feed with that, or use as an additive to your regular ferts.