Heat oil in a nonstick skillet over medium heat. Add sausage and cook, stirring often, until browned and heated through, about 5 minutes.
Divide zucchini noodles among 4 single-serving containers with lids (about 2 cups per container). Top each with equal amounts of the sausage, beans, peppers and pesto.
To reheat, vent the lid and microwave on High until the sausage is steaming and the noodles are tender, 2 ½ to 3 minutes.
