Heat up sesame oil in pan. Add chicken, season with salt and pepper and cook until no longer pink. Remove onto plate and set aside.
Add olive oil to the same skillet. Add ½ tablespoon butter and let melt. Add garlic and onion and cook, stirring often, for 4 minutes. Add celery and cook, stirring often, for 4 minutes.
Make space int he center of the skillet, by pushing the ingredients to the side. Add remaining butter and oil to the pan. Add eggs and cook scrambled style until done. Stir everything together.
Add rice, corn, sweet peas and chicken. Add soy sauce, salt and pepper. Cook, stirring often, until heated through. Garnish with chopped green onions or parsley.