In large frying pan, heat grapeseed oil over medium heat. Cut zucchini in half lengthwise, then into 1/2 in thick diagonal slices. Add zucchini to frying pan in single layer and cook, stirring occasionally, until nicely golden, about 4 to 5 minutes total. You may need to do this step in 2 batches if your frying pan doesn’t hold all the zucchini in one layer. The goal is to end up with golden brown—not mushy—zucchini. In the last 2 minutes of cooking time, season with a pinch of salt and pepper.

Meanwhile, to large bowl, add cucumber, kimchi, sesame seeds, soy sauce, and sesame oil. Toss to combine well. Set aside.

Once zucchini is cooked, add to cucumber mixture, and gently toss together. Serve warm, at room temperature, or cold with an extra sprinkle of sesame seeds, if desired.