Seedlings from old seeds

[loeb]

Hello all I have sown some old seeds I have to check if they are still able to grow, and got something odd with Chile Verde - 1 plant seems normal and the other one have a pair of first leafs and the third one growing, but its extremally small, slow and colour is different..(both sprouted in similar time, maybe few days apart) I thought that its a problem with the soil and added some fertilizer, but it changed nothing.. What can that be, a sign of a disease? Weakness of seedling? Alien seed ? Looks like this: