Prepare the zucchini noodles by running your zucchini through a spiralizer. If you don't have a spiralizer, you can also cut the zucchini into matchsticks, or use a mandolin to make thin slices.
Prepare your pesto (use this recipe for a classic basil pesto).
Slice your cherry tomatoes in half; if using other tomatoes, cut into cubes.
Thinly chop or grate garlic.
Cut or crumble feta cheese.
Combine vegetables, pesto, and feta in a bowl and toss thoroughly. Plate and enjoy.