Marinate the shrimp: In a bowl, toss shrimp with olive oil, garlic, lemon juice and zest, herbs, salt, and pepper. Let sit for 15–20 minutes while you prep the noodles.
Prepare the noodles: In a large skillet over medium heat, add olive oil or ghee. Sauté garlic for 30 seconds, then add butternut noodles. Cook for 5–7 minutes, stirring occasionally, until just tender. Season with salt and optional red pepper or ginger. Set aside and cover to keep warm.
Grill the shrimp: Heat a grill pan or outdoor grill to medium-high. Grill shrimp 2–3 minutes per side until pink and opaque. You can also pan-sear them in a skillet if preferred.
Assemble: Plate the noodles and top with grilled shrimp. Garnish with extra fresh herbs, lemon wedges, and a drizzle of olive oil if desired. Serve warm.