You can find some of the best pizza by the slice here. They offer specialties from the region of Liguria (Piedmont's neighbor to the south), such as farinata, a chickpea flatbread. This is place is a must for genuine Italian pizza. Antica Focacceria Genovese also has another location at Via San Domenico, 24.
Antica Focacceria Genovese
2 Via Ettore Perrone, Turin, Italy 10122Map