Make sure shrimp is clean and completely dry. Combine salt, pepper, and garlic powder and sprinkle it over the shrimp. Add the flour to a small bowl, and dredge the shrimp through the flour to get a very light coating on it. Heat a skillet on medium high heat and add the olive oil. Once hot, add the shrimp and brown on each side, about 2-3 minutes per side. Drain cooked pasta and add pasta to the shrimp. Top with pesto. To serve, garnish with fresh parmesan.