Preheat the oven to 350 F.
In medium saucepan, cook spaghetti noodles as indicated on the package. Drain and place into greased 9x13-inch baking dish.
In large skillet, add olive oil, onion, green tomatoes, pepper, eggplant, garlic powder, Italian seasoning, salt and pepper. Saute until veggies begin to soften.
Add the sauteed veggies in with the spaghetti.
In the same skillet, saute the chicken pieces for 5-7 minutes. Add in with the spaghetti and veggies and gently toss. Sprinkle the shredded cheese over the top.
Bake in the preheated oven for 25 to 30 minutes.
Serve Baked Chicken Spaghetti. Enjoy!