Start by preparing the sauce. Add all sauce ingredients to a food processor and pulse a few times until coarsely mixed, check the flavor and consistency. Then set aside.
Cook couscous as package directions.
Dice the watermelon and crumble the feta cheese, halve the tomatoes. Toast the pumpkin seeds on medium heat in a dry pan with a little salt until they begin to pop, then remove.
Arrange the lettuce in a bowl or on a serving platter. Add couscous, tomatoes, watermelon and feta cheese. Top with pumpkin seeds and Rocket Sauce, with extra in the side. Enjoy!