Could genuinely be that. Tried cooking dinner myself and ran into a similarly odd reaction. For some reason, evening meals specifically have become limited to only really plain foods lately.
Food just doesn't taste like it used to for me either. Don't get the same enjoyment out of eating anymore. That said, I'm down 60 pounds now and I'd rather be thinner than go back to where I was. Guess it comes down to what you're willing to trade.
Yes, weirdly enough I've developed this strong pull toward fresh food now, fruit and certain vegetables especially. Anything too heavily seasoned, salty, or spiced just feels overwhelming these days. Sticking to really simple meals lately.