01 - Preheat your grill to medium-high heat, approximately 400°F (200°C), ensuring the grates are clean and lightly oiled.
02 - In a small bowl, combine the olive oil, smoked paprika, garlic powder, onion powder, sea salt, black pepper, and lime juice. Whisk until a smooth paste forms.
03 - Pat the chicken breasts thoroughly dry with paper towels. Brush both sides of each breast evenly with the seasoning paste, ensuring full coverage.
04 - Place the chicken on the preheated grill and cook for 6 to 7 minutes per side, until the internal temperature reaches 165°F (75°C) and juices run clear. Transfer to a plate and let rest for 5 minutes.
05 - While the chicken grills, gently toss the diced avocados, quartered cherry tomatoes, red onion, cilantro, lime juice, sea salt, black pepper, and jalapeño (if using) in a medium bowl. Fold carefully to avoid mashing the avocado.
06 - Arrange the rested grilled chicken breasts on plates and spoon the avocado salsa generously over the top. Serve immediately.