I can tell you for sure that they are hungry. But the 10-10-10 is not great. Find something with midronutrients in it and a ratio with the first number higher than the other 2, and not TOO concentrated, and give it as a foliar spray a couple times too, plus a regular feeding.
I'm concerned about the soil- it looks bark-y. What is it? What's the pH? I think you are starting to see symptoms of calcium def or lock out.