Add bacon to a cold large skillet over medium heat. Cook until crispy, then remove with a slotted spoon, leaving the grease in the pan.
Add onion to the skillet; cook until slightly translucent. Stir in garlic and cook 1 minute, then remove onion and garlic, leaving the grease.
Season chicken with paprika, salt, and pepper. Add to the skillet and cook 6–8 minutes until just done. Remove chicken, keeping the grease.
Place Brussels sprouts cut-side down in the skillet. Cook 6–8 minutes, stir, then cook another 6 minutes until tender and lightly browned.
Return chicken, bacon, onion, and garlic to the skillet. Mix well.
Squeeze lemon juice over the top and stir to combine. Season with salt and pepper to taste.
Serve Hot