Make Spicy Chicken - Add chicken and all other ingredients (under spicy chicken), except vegetable oil into a medium bowl and toss well until evenly combined. Let marinade for about 10 minutes (begin cooking, if pressed for time).
Heat a large non-stick pan over medium-high heat with vegetable oil. Add chicken in a single layer and cook for about 3 minutes, until golden brown, turn over, stir in ¼ cup water and cook for additional 2 to 4 minutes or until cooked through and no water remains. Transfer chicken to a plate and let cool for a few minutes before serving.
(Make pico de gallo, mint-cilantro sauce and char tortillas while the chicken is marinating/cooking)
Make Pico de Gallo
Toss all pico de gallo ingredients together in a small bowl.
Make mint-cilantro sauce - Stir all mint-cilantro sauce ingredients together in a small bowl, until evenly combined (add enough water to make sauce slightly thinner, DON'T MAKE IT WATERY)
Char tortillas - Char tortillas on the stovetop over the flame, until lightly charred on both sides.
Assemble tacos - Place about ⅓ cup cooked chicken on each tortilla and top with few tablespoons of pico de gallo and drizzle of the mint-cilantro sauce. Top with more jalapeños and cilantro, if desired.