Preheat the oven to 400°F.
Prepare the salad first so the flavors have time to meld. Combine the quinoa, jalapeño, sliced peaches, cilantro, green onion, and lime juice in a large bowl and toss.
Drizzle with 1 to 2 tablespoons of the olive oil, toss and then season to taste with salt and pepper.
To prepare the fish, place the fish in a baking dish and brush with the remaining olive oil. Season with a pinch of salt and pepper.
Then, season the fish with the chile lime seasoning. If you can’t find chile lime seasoning, drizzle the juice of 1 lemon over the fish and sprinkle with chili powder. Be sure to taste the chili powder before using. Not all chili powder blends are equally spicy. Many are mild, but some brands have a high level of heat.
Put the baking sheet in the oven and roast the fish for about 10 minutes for every inch of thickness. This will be based on the thickest part of your fish. The fish is done when it is opaque and flakes slightly with a fork.
If you’ll notice in the photo, you can see some flaky separation in the fish fillets. This is one way you’ll know it’s done.
Plate the quinoa salad and then top with the cooked fish. Serve immediately.