Cut your chicken breast width-wise(so 1 breast will make 2 rolls). Flatten breast to about 1/4 inch thick. Sprinkle chicken with salt, pepper, and italian seasoning. Take a slice of bacon and cut in half and lay side by side on chicken breast.
Add onions and bell pepper and mushroom on top of bacon and then sprinkle cheeses on top. start at narrow end of chicken breast and roll tightly. Secure chicken with all filling inside by tying with twine or kite string.
In a skillet on medium heat, saute chicken until no longer pink. Remove chicken from skillet and place in a baking dish and put into a 375 degree oven for 30 mins. Remove from oven and top chicken rolls with remaining cheese and put back into oven for 10-15 mins longer.