Make dressing. In a bowl juice lemon and whisk in tahini, water, and garlic. Go scant on the warm water and slowly add a little more until you reach "drizzle" texture. Season with salt and pepper to taste.
Make quinoa according to package (or warm if you prepared in advance.)
Assemble bowls with half quinoa, half greens.
Add red peppers, cucumbers, artichokes, and avocado.