Place broiler on high.

Line a baking sheet with foil and add tomatoes, onion and garlic to the pan. Drizzle with 1 tablespoon of olive oil. Broil for 5 minutes then remove push everything to one side and add chopped mangoes to the opening on the pan and return to the broiler for 2 more minutes.

Remove the pan from the oven and let sit for about 15 minutes to cool slightly.

Add the tomatoes, onion, peeled garlic and cilantro to a food processor and pulse a few times to chop everything evenly.

Then add in mangoes, lime juice and salt and pulse once more.

Preheat oven to 400 degrees.

Take your chicken breasts and slice into them with a paring knife lengthwise but not all the way through, creating a little pocket inside. Scoop a few spoonfuls of salsa into the chicken breast then lay it on a foil lined baking sheet.  Sprinkle the chicken with salt and pepper and bake for 15 minutes.

*There will be leftover salsa!