Heat a large skillet over medium-high heat with a tablespoon olive oil. Once hot, add the shrimp and arrange on a single layer. Season with 1/2 teaspoon salt, 1/2 teaspoon black pepper, and chili flakes. Cook until pink, stirring to evenly cook. Transfer to a plate and set aside.
Stir in half of the scallions to the hot skillet, along with the garlic. Cook for a few seconds. Add the celery, carrots and ginger and cook until soft and tender, about 5 to 7 minutes. Make sure to stir often so that it doesn't burn. Push the veggies to one side of the skillet. Add the beaten eggs to the empty side and allow to cook for a minute without touching. Scramble everything together and cook until the eggs are done, about 2 more minutes.
Stir in the brown rice, soy sauce, sesame oil, remaining 1/2 teaspoon salt, 1/2 teaspoon black pepper, peas and shrimp. Lower the flame to low and allow to heat through. Serve and garnish with remaining scallions. Enjoy!