I have 8 tomato plants (three varieties) in my garden plot. Two weeks ago we had a nasty onslaught of flea beetles that really hurt the leaves. Since that time, the flea beetles have abated. Four of the plants seem to be recovering nicely and two of those have set fruit. The other four, however, have a bizarre tight curling issue with the leaves. Reading online, the diseases with curled leaves were all described as curling after opening fully. These leaves are not fully forming and despite having flowers, the plants do not appear to be able to set fruit.

Any ideas what it could be or if I should pull the plants? I don't want to potentially infect the healthy surrounding plants.

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