Spiralize the zucchini into noodles and set aside on a paper towel to drain excess moisture.
Season the chicken breast with half of the sea salt and black pepper.
Heat olive oil in a large skillet over medium-high heat and sear the chicken until golden and cooked through, about 6-7 minutes per side.
Remove chicken from the pan and let it rest for 5 minutes, then slice into thin strips.
In the same pan, add minced garlic and sauté for 1 minute until fragrant.
Stir in the coconut milk, nutritional yeast, remaining salt, pepper, and lemon juice, simmering until the sauce thickens slightly.
Fold in the fresh basil and zucchini noodles, tossing gently for 2 minutes until the noodles are just tender.
Top the zucchini noodles with the sliced chicken and serve immediately.