In a word, YES.
Wisteria is part of the Leguminosae family, and contains the glycoside wistarin and another toxic component called lectin. While the pods and seeds contain the majority of these toxins, all parts of this plant are considered to be poisonous. If ingested, wisteria can produce significant abdominal pain, vomiting, diarrhea, and potentially profound central nervous system depression. Ingestion of only one or two seeds can cause serious illness. Based on this, you should not allow your dog to chew on this plant.