Preheat the oven to 425°F. Line a large baking sheet with parchment paper.
Top with chicken, tomatoes, jalapenos, and red onion.
Drizzle everythign in oil, turning and tossing to coat evenly. Evenly season with blackened seasoning.
Bake for 25-30 minutes, or until the chicken is cooked through (165°F).S
Generously squeeze fresh lime juice over the dish before serving.
Salt and pepper to taste.