Char peppers over a gas flame or under the broiler with oven door cracked for steam to escape. Place charred peppers in a bowl and cover with plastic wrap to steam. Let cool then peel, seed and finely chop.
Heat 2 tablespoons EVOO in a Dutch oven over medium-high heat. Add chicken, season with salt and pepper, and brown and crumble the meat. Add onions and garlic to the pot and cook 5 minutes to soften. Season with cumin and coriander, and stir in chopped peppers. Add stock and herbs, and simmer 5 minutes. Season with hot sauce to taste.
Turn off heat and stir in sour cream to combine. Serve with chips alongside for dipping.