Preheat the oven to 400.
Line baking sheet with aluminum foil.
On the lined baking sheet toss together the shrimp, bell peppers, poblano, onion, oil, chili powder, cumin, ⅝ teaspoon salat, and coriander.
Roast for 9-10 minutes or until shrimp are cooked through.
Remove shrimp and place on plate, tented with foil to keep warm.
Turn the oven to broil and broil the veggies until they are slightly charred, about 3- 4 minutes.
In a small bowl, combine the sour cream, cilantro, jalapeño, lime zest, lime juice, garlic and ⅛ teaspoon salt.
Warm tortillas either in the microwave, oven or quickly char on a gas flame.
Spoon the shrimp and veggies into a tortilla and top with the sour cream mixture.