Season the chicken breast with half of the sea salt and black pepper.
Heat a non-stick skillet over medium-high heat and sear the chicken for 6 minutes per side until golden and cooked through.
While the chicken cooks, bring a pot of water to a boil and cook the chickpea gnocchi until they float, then drain.
In a small food processor, pulse the baby arugula, walnuts, garlic, lemon juice, nutritional yeast, and olive oil until a vibrant, slightly textured pesto forms.
Slice the cooked chicken into thin, bite-sized strips.
In the same skillet used for the chicken, toss the cherry tomatoes for 2 minutes until the skins begin to blister.
Add the gnocchi and chicken back to the skillet, pour in the arugula pesto, and toss gently to coat everything evenly before serving.