In a large pot or deep skillet, heat the olive oil over medium heat. Add the diced chicken breast and season with salt, pepper, and Italian seasoning. Cook until browned and cooked through, about 5-7 minutes. Remove the chicken from the pot and set aside.
In the same pot, add the diced onion and sauté until translucent, about 3-4 minutes. Add the minced garlic and cook for another 1-2 minutes until fragrant.
Pour in the chicken broth and bring to a gentle simmer.
Add the potato gnocchi to the pot and cook according to package instructions, usually about 2-3 minutes until they float to the surface.
Reduce the heat and stir in the heavy cream. Mix well, allowing the sauce to thicken slightly.
Add the cooked chicken back into the pot along with the fresh spinach. Stir until the spinach wilts and everything is heated through, about 2-3 minutes.
Taste and adjust seasoning, adding more salt, pepper, or Italian seasoning if necessary.
Once everything is combined and creamy, remove from heat.
Notes
Serve warm topped with grated Parmesan and fresh parsley.