Preheat your oven to 425°F (220°C) for crispy wedges.
Wash Russet potatoes thoroughly and cut each in half lengthwise, then slice halves into uniform wedges.
In a large mixing bowl, combine salt, black pepper, garlic powder, oregano, paprika, cumin, and chili flakes. Add potato wedges and drizzle with olive oil. Toss to coat evenly.
Spread seasoned wedges in a single layer on a large baking sheet without overcrowding.
Bake for 30-35 minutes, flipping halfway, until golden brown and crispy on edges.
While baking, prepare Avocado Crema by blending avocados, salt, chopped scallions, green chili, cilantro leaves, lime juice, sour cream, and olive oil until smooth and creamy. Adjust seasoning to taste.
Remove baked wedges from oven, let cool slightly, then serve warm with a drizzle of Avocado Crema or use as a dip. Garnish with extra chopped cilantro if desired.