Preheat broiler. Rinse and pat dry the fish. Broil fish 3-4 minutes on each side until no longer translucent. Rinse and slice the pepper, tomato and onion. Heat a nonstick skillet to medium high heat; add olive oil and sauté the vegetables for 3-4 minutes until cooked, but still crispy. Add the garlic powder, cumin and hot sauce and mix well with the vegetables. Warm the tortilla(s) in a microwave oven for about 10-15 seconds. Flake the fish into chunks and place in the center of tortilla(s); top with vegetables and sour cream. Serve immediately. Note: microwaves ovens vary in power: check after 20 seconds.