Preheat the broiler. Line a cookie sheet with parchment paper. Rub the pepper with one teaspoon olive oil and roast in the oven for 25 to 30 minutes, or until the skin starts to char and fall off.
Turn them once one side is dark and the skin begins to separate. Place the peppers in a bowl cover with plastic wrap for 5 to 8 minutes. Peel the skin off the peppers and remove the stem and seeds. Slice them into thin strips.
Heat the remaining olive oil in a large sauté pan over medium-high heat. Add the onion slices and cook until lightly caramelized, about 10 minutes. Add the garlic slivers and cook gently, make sure they do not burn, for about 30 seconds.
In a large skillet add 1 tablespoon olive oil over medium-high heat. Season the swordfish with salt and pepper. Sear the swordfish until cooked thru, about 3-4 minutes for each side.
Slice the swordfish into 4 even portions and top with onions and roasted bell peppers.
Giangi's Kitchen provides nutritional information, but these figures should be considered estimates, as a registered dietician does not calculate them.