Most dogs do fine with peas when it is served plain and in small amounts.
Quick call
Yes, in moderation. Canned peas with sodium are less ideal than plain fresh or frozen peas.
What matters most
Use plain peas with no butter or seasoning.
When to call your vet
If your dog has vomiting, diarrhea, unusual fatigue, or belly pain after eating peas, call your vet the same day.
Source check: AKC includes peas among dog-safe vegetables when served plain. Source