Healthy food porn!
And yes, it is possible and it happens at Opoa in Paris.
Opoa is a lovely canteen/coffeeshop located a few blocks from Place de la République: here you can eat healthy dishes that are rich, generous and above all, yummy!
Not everything is gluten free but there are options.
At Opoa eating healthy means select local producers, eat seasonal foods and cook everything fresh, everyday. For this reason it has recently been awarded the prize of the best 10 «table responsable» in Paris.