Add the arugula, mint, parsley, 2 tbs peas, nuts if using, lemon juice and fresh black pepper into a food processor. Run until as fine as you can get it. You will need to stop and scrape down the side a few times if you have a large processor. Set aside.
In a large bowl, add in the quinoa and mixture from the food processor, and mix until uniform and covered. Add in the remaining ingredients and toss until combined.
