In a small bowl, whisk together 2 tablespoons lime juice, olive oil, chili powder, cumin, smoked paprika, 0.5 teaspoon salt, and pepper.
Place chicken in a resealable bag or shallow dish, pour the marinade over it, and coat thoroughly. Marinate in the refrigerator for at least 30 minutes.
Prepare the salsa by combining diced pineapple, red onion, cilantro, minced jalapeno, 1 tablespoon lime juice, and 0.5 teaspoon salt in a medium bowl; toss to combine and set aside.
Preheat a grill or grill pan to medium-high heat (approximately 400 degrees Fahrenheit).
Remove chicken from marinade and grill for 6 to 8 minutes per side, or until the internal temperature reaches 165 degrees Fahrenheit.
Remove chicken from heat and allow to rest for 5 minutes.
Serve the chicken topped generously with the pineapple salsa.