Slice loaf of bread in half, lengthwise.
Seed and chop peppers into large pieces.
Slice onion into quarters.
Grill bread, bell peppers and red onion over medium-high heat until bread is brown and toasted on both sides and peppers and onions are slightly charred.
Remove bread, peppers and onion from grill and cut into 1 inch pieces; Put in large bowl.
Chop tomatoes into 1 inch pieces; Chop cucumber into 1/2 inch pieces.
Add to bowl with bread, peppers and onions.
Roughly chop basil and parsley and add to bowl with bread and vegetables.
Prepare vinaigrette (see below) and pour over the salad.
Serve immediately or allow to sit for 30 minutes for the flavors to combine.