Preheat oven to 450 levels. Place peaches and onions on a huge rimmed baking sheet; season with salt and pepper. Sprinkle with ginger, soy sauce, 1 tablespoon vegetable oil, sesame oil, and crimson-pepper flakes; toss to coat.
Rub rooster with closing teaspoon vegetable oil; season with salt and pepper. Arrange rooster pores and skin facet up amongst peaches and onions.
Roast till rooster is opaque at some stage in and registers 160 levels on an instantaneous-read thermometer inserted in thickest share of breast (warding off bone), 25 to 30 minutes. Serve rooster with white rice, peaches, and onions.
Cook dinner’s Notes
Peeling ginger: To remove the pores and skin with out scream, with out losing any flesh, scrape it off the employ of the perimeter of a spoon.