Preheat your grill or oven to 400°F (200°C).
Pat the chicken breasts dry with a paper towel.
In a bowl, mix olive oil, garlic powder, onion powder, salt, and pepper.
Brush the mixture onto both sides of the chicken breasts.
Place the chicken on the grill or in a baking dish.
Cook for 5-7 minutes on one side.
Flip the chicken and cook for another 5-7 minutes.
Check if the internal temperature reaches 165°F (75°C).
Remove from heat and let it rest for 5 minutes.
Squeeze fresh lemon juice over the chicken before serving.