Preheat oven to 350. On sheet pan, place salmon skin down. With a knife, slice multiple long cuts into salmon on diagonal.
Add minced jalapeno and garlic together. Stir well.
Push mixture into crevices of fish evenly divided between all four pieces
Sprinkle and divide garlic salt between all four fish. Turn 12 turns of pepper grind per each piece of Salmon. Bake in oven for 12 minutes. Don’t over cook the fish.
Remove from oven. Use a spatula to plate the fish. Insert the spatula between inside edges of the skin and meat of the fish. Slide spatula in and lift.
Lagniappe: Cook an extra piece of salmon for you to take to lunch.