Preheat oven to 400 degrees. Line a baking sheet with parchment paper or a silicone baking mat, set aside.
In a shallow dish, combine the flour, bread crumbs, garlic powder, Italian seasoning, salt, pepper, basil, and oregano. Lay each piece of chicken into the mixture and toss until both sides are fully coated.
In a a large skillet set over medium heat, add olive oil. When the oil is hot, place the chicken into the pan, making sure not to rub off the coating. Sear chicken for 2-3 minutes on each side (making sure not to move it around) until golden brown.
Remove the chicken from the skillet and place onto the prepared baking sheet. Place in the oven for 15-20 minutes or until it reaches an internal temperature of 165 degrees.
While the chicken is baking, heat a large pot of water and cook the fettuccine according to the package's instructions. Drain and set aside.
While the noodles are cooking, set the same skillet used to sear the chicken over medium-low heat. Add the butter. When has melted, add the bell pepper and cook for 3-4 minutes. Season with salt, pepper and paprika, then add the garlic and sauté until fragrant, about 1 minute.
Add flour and whisk constantly for 1 minute. Slowly pour in the chicken broth, milk and half & half. Turn heat up to medium and bring mixture to a simmer. Add the spinach and cook until wilted and the sauce thickens, about 3-5 minutes.
Stir in parmesan cheese, then remove from the heat and whisk until smooth. Add pasta and toss to combine.
Serve pasta in bowls topped with sliced chicken and extra parmesan cheese.