Cook the pasta of your choice according to package instructions.
While the pasta is cooking, cut the zucchini and cherry tomatoes into bite-sized pieces.
Add a drizzle of olive oil to a large pan and allow to heat up for a few minutes, then add the zucchini and cherry tomatoes to the pan, sauteing for about 5 – 10 minutes with a little sea salt and pepper.
During the final minute of sauteing the vegetables add in the arugula and cook until almost wilted.
Drain most of the pasta, reserving just a tbsp or two of the pasta water and pour the pasta back into the pot with the olive oil and lemon juice. Add in the canned tuna (chopped up with a fork) and sauteed vegetables.
Divide between two plates, sprinkle some black pepper on top and enjoy.