Akuyaku Reijou Meshi: Ibukuro Tsukande Hametsu Flag Kaihi

Reika Manpuku is a plump woman in her 30's who loves eating...but now she's been reincarnated as a villainess in an otome game!! Reika has the power to eat and not gain weight, but this power came with a price. Now living as Jean, the villainess, her world is full of bland, tasteless food. However, she is discovering and developing delicious dishes with her food buyer knowledge and culinary skills. Reika's goal is to win over the hotties of this world through their stomachs to avoid her doom flag. Can she get all of them to say, "nummy"?! (Source: MangaPlaza)