In a large skillet, heat oil over medium heat. Add garlic, carrots, red peppers, black pepper, salt, cayenne pepper and oregano. Stir and cook for 1 - 2 minutes.
Add chicken and heat through.
Stir in flour to coat evenly, cook for 1 minute stirring constantly. Stir in diced tomatoes and spinach. Cook until spinach has wilted.
Add cooked pasta and 1/2 cup of cheese. Mix well and transfer into a lightly greased casserole dish.
Cover with remaining cheese. Bake for 25 minutes.
Notes
Use your favourite pasta.Change the veggies - try broccoli, frozen peas, green beans, asparagus, etc.