Preheat oven to 350 degrees and spray quiche pan with olive oil spray. In a large bowl, whisk eggs and milk; stir in avocado, feta cheese, sun dried tomatoes, spinach, thyme, oregano, quinoa and salt. Pour into prepared quiche dish, cover tightly with foil, and bake for 45–50 minutes, or until set. Remove quiche from oven; remove foil, sprinkle with Parmesan cheese, and return to oven for an additional 10–15 minutes, or until golden brown. Let quiche stand for 10 minutes prior to serving.