Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper or lightly grease it with cooking spray.
In a medium bowl, combine the bourbon, honey, soy sauce, olive oil, Dijon mustard, garlic powder, salt, and pepper. Whisk until well blended.
Place the salmon fillets on the prepared baking sheet. Arrange the sliced peaches around the salmon.
Pour the bourbon mixture over the salmon and peaches, ensuring the salmon is well coated.
Roast in the preheated oven for 15-20 minutes, or until the salmon flakes easily with a fork and the peaches are tender.
Remove from the oven and let it rest for a few minutes. Garnish with fresh thyme or parsley if desired before serving.