Should I put capsicum in this pasta dish?

Ok, well I'm going to make a tomato based pasta dish for dinner tonight and it is going to have onion, artichokes, green stuffed olives, bacon, mushrooms and I was going to put basil pesto in it (only because I don't have any fresh basil on hand). Do you think I should but capsicum in it as well or will this wreck it? Any other views most welcome.