In a pot, simmer tomatillos, onion, garlic, and chili for 7–8 minutes until soft. Drain and blend with cilantro, lime juice, broth, salt & pepper. Taste and adjust seasoning. Set aside.
In a bowl, mix shredded chicken with cumin, garlic powder, salt & pepper. Optional: mix in cream cheese or sour cream to make a creamy filling.
Lightly fry each tortilla in a little oil for 10–15 seconds per side until pliable.
Place on paper towel to drain.
Preheat oven to 375°F (190°C). Dip each tortilla briefly in salsa verde, then fill with chicken and roll. Place seam-side down in a baking dish. Pour remaining salsa over the top. Add shredded cheese and bake.
Bake for 15 minutes until cheese melts and edges are slightly golden.
Finish and Serve. Top with queso fresco, avocado slices, fresh cilantro, and red onion.