For the sweet potatoes: Preheat the oven to 350 degrees F. Place the wedges on a baking sheet, coat with olive oil and sprinkle with salt and black pepper. Roast until golden brown and tender, 40 to 45 minutes.
For the snapper: Coat the snapper with 1 tablespoon of the olive oil and sprinkle both sides of each fillet with salt and black pepper. Set aside. Combine the lemon juice, sugar and vinegar in a medium skillet over medium-high heat and cook until reduced slightly and fine bubbles appear, about 2 minutes. Add the coconut milk, bell peppers, onions and pineapple and cook, stirring occasionally, until thickened, 10 minutes.
Meanwhile, heat the remaining olive oil until hot in a second skillet over medium-high heat. Add the fish and cook, about 2 minutes per side, and then transfer to an ovenproof plate or dish and pour the pineapple mixture on top. Continue cooking in the oven until bubbly and golden, about 5 minutes.
Serve the fish alongside the sweet potato wedges.
This recipe was provided by a chef, restaurant or culinary professional and may have been scaled down from a bulk recipe. The Food Network Kitchens chefs have not tested this recipe, in the proportions indicated, and therefore, we cannot make any representation as to the results.