Dice tomatoes peppers garlic basil and put in a large bowl then add enough olive oil to almost cover everything add parsley onion powder and olives then add salt and pepper to taste. Let that sit out on the counter for a while to marinate (few hours)
Cook tortellini until al dente drain and add to the tomato mixture. Mix everything real well and then put in fridge overnight.
Take out about a 1/2 hour before your ready to serve.