In a small bowl, whisk together the peanut butter, tamari, half of the lime juice, garlic powder, and ground ginger until smooth and creamy.
Season the chicken breast evenly on both sides with sea salt and black pepper.
Heat the extra virgin olive oil in a medium skillet over medium-high heat.
Place the chicken in the skillet and sear for 5 to 7 minutes per side, or until the internal temperature reaches 165 degrees Fahrenheit.
While the chicken is cooking, combine the diced pineapple, red onion, red bell pepper, cilantro, and the remaining lime juice in a separate bowl to create the salsa.
During the final 2 minutes of searing, brush the peanut lime sauce onto the chicken, allowing it to thicken and become slightly tacky.
Remove the chicken from the heat and serve immediately, topped generously with the fresh pineapple salsa.