Dice your bacon and onions and add them to your medium skillet. Cook under crispy and rendered. While bacons cooking, chop and core your tomatoes, put them on your medium sheet pan covered with olive oil, and seasoned with salt and pepper. Put them in the oven at 370-390 degrees (depending on your oven) and roasted until cooked through.
Remove the bacon from heat and pour it, as well as its pan juices, into your serving bowl. Add the tomatoes, black beans, and corn to the mixture, squeeze lime juice over the mixture and chill. Serve cold/room temperature
*I opted to add Goya seasoning with Cilantro and tomato and a little bit of sugar, but this was a