In a saute pan on high heat, add oil, garlic, and pancetta to the pan. To the pan also add lobster body shell side down, cover the pan, 2-3 minutes
Remove lid, turn the lobster body over, add tomato, pepper, and lemon juice. Cover again and cook for 2 -3 minutes.
Remove lid, pour all ingredients onto a bowl pan or platter for 2 -3 minutes while the remaining ingredients are cooked
In saute pan under medium heat add shrimp and clams, cook for 2-3 minutes, turn shrimp and clams then add remaining vegetables, season with salt and pepper. Add the butter to the pan.
Return the lobster and the other ingredients back to the pan and cover for 1 -2 minutes.
Plate lobster halves on each side of the plate, place vegetables in between the halves with shrimp and clams on top of the vegetables