In a blender or food processor, combine the roasted red peppers with the parmesan cheese, olive oil, sunflower seeds, and garlic. Process to make the pesto, pulsing for a few seconds until it reaches a coarse consistency. Season with sea salt and black pepper.
Serve at room temperature with zoodles, spread into your sandwiches, or serve as a dip with keto cheese crackers. Alternatively, store in an airtight jar/container for up to 4 days in the fridge.