In a large bowl, whisk together oil, lemon juice, paprika, salt, dried thyme, onion powder, garlic powder, black pepper, dried oregano, sugar, and cayenne pepper.
Pat chicken dry with paper towels to remove any surface moisture (this will help the spice mixture to stick).
Add chicken to spices, pressing the chicken into the mixture to coat well. (You can cook it right away or refrigerate for up to a day to build flavor.)
Heat large skillet or grill pan to medium heat. If you prefer, you can heat up an outdoor grill or heat an air fryer to 375 degrees F. Brush pan, grill, or grates of an air fryer basket with some cooking oil to help prevent sticking. Add chicken to hot pan and cook on both sides until a dark crust appears on both sides and cooked through (165°F). (In the air fryer, cook without turning for 7 to 10 minutes.)
Transfer cooked chicken to a cutting board and let it rest for 5 minutes.
Slice chicken and serve.