Heat olive oil in a large skillet over medium-high heat.
Add the chicken pieces and season with salt, pepper, and paprika.
Cook for about 5-7 minutes until golden brown and cooked through.
Reduce heat to medium and add butter and minced garlic.
Stir well, letting the garlic cook until fragrant, about 1 minute.
Add red pepper flakes (if using) and stir in lemon juice.
Remove from heat, garnish with fresh parsley, and serve immediately.