Unroll crescent roll dough and divide into triangles. Spread 1 tbsp. feta evenly over each piece of dough.
Arrange about 1/4 c. of baby spinach leaves over the feta, and sprinkle lightly with seasoned salt. Place piece of salmon on the dough closer to the short end of the triangle as shown here:
Roll the large side of the dough over the top of the salmon, and pull the short end of the triangle over the top. Press the small corner down to hold the dough together.
Place your rollups on a baking sheet lined with a silicone mat or aluminum foil sprayed with cooking spray. Bake in preheated oven for 18 minutes, or until crescent rolls are brown and salmon is cooked completely.
Also try this recipe with boneless, skinless chicken breasts!