Cut the fresh salmon into 4 equal pieces. Season each fillet with garlic powder, salt, and pepper. Let rest while heating the skillet.

Heat a skillet over medium-high heat; add olive oil and butter. Once melted, place the salmon in the skillet and sear for 3-4 minutes per side until golden but slightly undercooked.

In the same skillet, sauté chopped onions over medium heat for about 5 minutes until softened and golden brown.

Pour in chicken broth and lemon juice, then add Boursin cheese. Stir and simmer for 4-5 minutes until the sauce thickens.

Return seared salmon to the skillet, spoon sauce over it, cover, and simmer for an additional 3-5 minutes until cooked through.

Taste and adjust seasoning with salt and pepper. Garnish with chopped parsley before serving.