Slice chicken breasts in half lengthwise.
Combine crushed tomatoes, tomato sauce, tomato paste, slat, pepper, basil, and garlic in the bottom of the slow cooker and mix well.
Add chicken breasts on top of the sauce and sprinkle with salt a pepper.
Cook on high for 4 hours.
Remove chicken from slow cooker and stir sauce. Place the chicken back on top of the sauce and top with the cheese.
In a small pan, heat the oil over medium heat for a minute.
Add the bread crumbs with a pinch of salt and pepper. Cook the bread crumbs, stirring often for about 5 minutes.
To serve, scoop out a piece of chicken with some sauce underneath and place over pasta. Top with a big scoop of the crispy bread crumbs.