To make pesto, add all pesto ingredients to a food processor and blend until smooth.
Over medium heat, add shrimp, lime juice and chili flakes to a skillet and gently heat (shrimp is already cooked) through. Add zoodles (spiralized zucchini) and saute for 2-3 minutes.
Add shrimp, zoodles and pesto to a large bowl and gently combine. Serve topped with extra chili flakes and a squeeze of lime juice (optional).