Found this great looking recipe from BBC Good Food.
Reference Link:
Tuna, olive & spinach spaghetti:

Method

• STEP 1

  Bring a large pan of salted water to the boil. Add the spaghetti, lower the heat to medium and cook for 10 mins until al dente.

• STEP 2

  Meanwhile, heat the oil in a large, lidded frying pan over a medium heat. Cook the onion until softened, about 5-6 mins. Then, flake in the tuna and adding the olives, lemon zest, juice and spinach. Stir together and cover, then leave to cook for 3 mins. Turn off the heat, leaving it covered for 5 mins, until the spinach has wilted.

• STEP 3

  Drain the pasta, reserving 150ml of the cooking water. Add the pasta to the tuna mixture and toss together, adding a good splash of the reserved water. Add most of the herbs, toss together and season with black pepper. Divide between bowls, and top with the remaining herbs.

Jeannie notes.. Above is curated for evaluation and recommendation from BBC Good Food

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Tuna, olive & spinach spaghetti

reco low-cal