Preheat your oven to 375°F.
Cut the corn tortilla into eight triangles, lightly brush with a small amount of the olive oil, and bake for 8-10 minutes until golden and crispy.
Season the chicken breast evenly with the chili powder, sea salt, and black pepper.
Heat the remaining olive oil in a skillet over medium heat and cook the chicken for 6-7 minutes per side until fully cooked through.
While the chicken and chips cook, finely dice the mango and red onion.
In a small mixing bowl, combine the diced mango, red onion, chopped cilantro, and lime juice to create the salsa.
Slice the cooked chicken into strips and serve it alongside the fresh mango salsa and warm tortilla chips.