Charring the tomatoes adds a good depth of flavour. This is also a great way to sweeten tomatoes a little if they aren’t at their peak ripeness. You can char the tomatoes on a grill or in a hot cast iron skillet.
Preheat grill to high.
Brush the tomatoes with 1 tbsp. olive oil. Grill tomatoes, turning as they brown, about 6 to 8 minutes.
Peel and chop the tomatoes and add to a medium bowl. Add the red pepper, onion, celery, garlic, parsley, lemon juice, 1 tbsp. olive oil, oregano, cayenne. Season the mixture with salt and pepper. Toss. Taste for seasoning.