yes indeed they look like that. First they have green leaves and after few months all turn into red leaves. I thought they have some disease or sun burnt. Very weird. This pineapple was not forced, it flowered naturally after 1 year and 2 months from planting, considering during the winter was inside with low light intensity and dry enviorment.
About the fertilization I don't think it's too much. 150 ppm N, 60 ppm P, 300 ppm K it's not much per week.