Ingredients
Preheat your oven to 375°F. In a large bowl, combine the sweet-potato wedges with 1 Tbsp canola oil, Japanese seven-spice, and flaky sea salt, to taste. Transfer the wedges to a baking sheet. Roast in the oven till crisped, 30 to 35 minutes.
As the potatoes roast, heat a large pan over medium high. Season both sides of each burger with salt and pepper. Add the remaining oil to the pan, swirl to coat, add the patties, and cook till done, 4 to 6 minutes on each side. Transfer the patties to a plate, top each with a cheese slice, and allow to rest.
In the same pan, add the pineapple and onion slices; sear on both sides till blackened in some spots, about 3 minutes per side.
Put each burger on the bottom half of a bun and top with the onion, pineapple, jalapeño, and 1 Tbsp teriyaki sauce each. Close the buns.