Preheat the oven to 425 degrees F.
For the quinoa: Over medium-high heat, bring the broth to a boil in a medium saucepan. As the broth is coming to boil, add the quinoa, then stir and cover. Reduce the heat to a simmer and steam the quinoa until the grains pop, about 10 minutes. Remove from the heat and let stand for 10 minutes. Fluff with a fork.
For the peppers: Set a large saute pan over medium-high heat. Add a drizzle of olive oil and add the turkey, crushed red pepper flakes and garlic. Sprinkle with salt and pepper. Cook until well browned, 5 to 7 minutes, while stirring with a wooden spoon and breaking up the pieces. Deglaze with the wine. While the turkey is browning, rinse the peppers and pat dry. With the pepper lying down on its side, cut off the top and remove the seeds and membrane. Repeat for the remaining peppers. Leave the stem on the top for presentation. Set aside.
Once the turkey is browned, shut off the heat and fold in the quinoa, kale and pepitas. Mix to incorporate all ingredients thoroughly. Check for seasoning and adjust with salt and pepper if required.
In a small mixing bowl, combine the panko and Parmesan. Add a drizzle of olive oil to lightly moisten and season with salt and pepper. Set the peppers on a roasting tray cut-side up and stuff each with about 1/3 cup of filling. Top each pepper half with about 2 tablespoons of panko-Parmesan topping. Cover loosely with foil, place in the center of the oven and bake for 15 minutes. When the peppers are tender and cooked through, remove the foil and turn on the broiler. Cook under the broiler to brown the panko breadcrumbs and crisp up, 1 to 2 minutes. Remove the peppers from the oven and allow to rest before serving.
To present, place 1/4 cup of Roasted Tomatillo Avocado Sauce on a plate and place the roasted, stuffed pepper halves in the middle of sauce. Garnish with parsley sprigs.
Preheat the oven to 350 degrees F.
Place the tomatillos onto a baking sheet. Toss the tomatillos with olive oil. Season with salt and pepper and place into the oven. Roast until nicely charred, about 10 minutes. Remove from the oven and set aside to cool.
Combine the tomatillos, 1/4 cup water, cumin, 1 teaspoon salt, avocado, garlic, jalapenos, onions, lime juice and cilantro in a blender and puree until completely smooth. Place in the refrigerator and allow the sauce to settle before serving, so it is smooth.