Preheat oven to 375°F (190°C).
Lightly grease a baking dish and place chicken breasts inside.
Drizzle olive oil over chicken and season with garlic powder, smoked paprika, salt, and black pepper.
Spread BBQ sauce evenly over each chicken breast.
Bake chicken for 20 minutes until nearly cooked through.
Remove dish from oven and sprinkle shredded cheddar cheese over the chicken.
Top with chopped cooked bacon.
Return to oven and bake for 5 more minutes until cheese is melted and bubbly.
Remove from oven, garnish with chopped green onions if desired, and serve warm.