The night before, place the frozen mango in a glass bowl with a lid and let it thaw in the fridge.
Cut the top off the mini sweet pepper, cut it lengthwise into quarters, and scrape out the seeds.
Add the pepper to the chopper and pulse a few times to break it down.
Add the thawed mango, tomato (if using), onion powder, garlic powder, sea salt, and lime juice. Blend until it reaches the consistency you like.
Pour the salsa back into the bowl the mango thawed in.
Stir in the chopped cilantro and a sprinkle of cayenne or chili pepper, if using.
Serve right away, or cover and refrigerate.