Prepare the noodles: Bring a large pot of salted water to a boil. Add the whole wheat noodles and cook according to the package instructions. Drain and set aside.
Cook the cod: In a skillet, heat olive oil over medium-high heat. Season the cod fillets with black pepper and salt. Cook for 4-5 minutes on each side or until the fish easily flakes with a fork. Remove from heat and let it rest for 5 minutes.
Assemble the salad: In a large mixing bowl, combine the cooked noodles, fresh spinach, and julienned carrots. Toss gently to mix.
Add the cod: Flake the rested cod into bite-sized pieces and add it to the salad mixture.
Finish with tahini: Drizzle the tahini over the salad and toss gently to combine.
Garnish: Sprinkle with fresh mint. Serve immediately and enjoy!