Preheat the oven to 425F.
Place the salmon on a large baking sheet lined with parchment paper. Drizzle with olive oil and season with salt and pepper.
Place the salmon in the oven and cook for 20 minutes.
In a large pan, saute the onions with the olive oil and the butter until they are cooked and soft but not browned.
Add the garlic and cook for another minute.
Add all the rice and stir it around with the other ingredients to toast the grains thoroughly without browning.
Raise the heat to high, add the wine and reduce it until nearly all of the liquid is absorbed into the rice.
Stir in the 1/4 of the stock, lemon zest, and lemon juice. reduce the heat, stir and and wait until the stock is all absorbed.
Repeat until all the stock as been added. Adjust the quantity if the rice is too uncooked.
When the rice is nearly done, add the peas, stir and cook until the rice is done.
Add the chopped parsley and grated Parmesan cheese. Mix together.
Add the salmon and season to taste before serving.
DONE!