Add 1 cup quinoa and 2 cups chicken broth to a pot fitted with a lid and bring to a boil. Reduce to a simmer and cook quinoa for 15 minutes (or until liquid has been absorbed). Let cool for 5 minutes.
While quinoa is cooking, make the vinaigrette by adding 1/4 cup fresh lemon juice and zest of 1/2 lemon, 2 tablespoons white wine vinegar, and 1 garlic clove, minced to a medium-sized bowl. Slowly whisk in 1 cup olive oil and season with 1 teaspoon kosher salt and 1 teaspoon freshly ground black pepper.
In a large salad bowl, add quinoa, 1 16-ounce can chickpeas, rinsed and drained, 1 red pepper, cubed (about 1 cup), 1 orange or yellow pepper, cubed (about 1 cup), 1/2 medium red onion, diced and 1/2 cup fresh cilantro, chopped, and mix to combine
Crumble in 1 cup crumbled feta cheese and add dressing.
Notes
To get a nice emulsified dressing, try an immersion blender