Hello Paradajky,
this looks pretty much like what I have (or rather my toms) suffered from for years. My diagnosis is Septoria as it only affects leaves. No damage on the stems and the fruit are also okay even though smaller than usual. That's probably because some of the plants lose half or even more of their leafage. Actually, I can also see the typical brown spots in your pictures.
Fusarium wilt would demonstrate itself by making the plants "sad" even though they had enough water. You haven't mentioned anything like that.
I don't know exactly about feather meal, but blood meal is a rich source of bioavailable nitrogen, but it contains fairly little phosphorus. And stunt is a typical symptom of underdeveloped root system. Feather meal does contain 12% of N, but that nitrogen is slow-releasing and not easily available for the plants. My advice is to give them some P rich fertilization.
Milan HP
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