Is Pea Protein Powder a complete protein?

No, pea protein powder is not a complete protein. While there are some articles online which suggest that it is because it contains all 9 essential amino acids, it does not contain Methionine in high enough concentration to meet with human dietary requirements.

That being said, it should be noted that rice protein powder compliments pea protein powder perfectly. Each of these protein powders has higher concentrations of amino acids that the other is deficient in.