Prepare the couscous with the broth according to the package instructions and allow to cool. Every now and then loosen up with a fork.
Meanwhile, cut the green of the spring onions into rings. Chop the feta, tomatoes and stuffed peppers. Add everything to the couscous and rub the zest of the lemon over it. Pour in a splash of lemon juice and mix everything well.
Let it steep, preferably overnight in the refrigerator.