Cut chicken into small, even pieces.
Heat 1 tablespoon oil in a large skillet over medium-high heat.
Cook chicken for 5 to 7 minutes, until it reaches 165°F (74°C). Remove from skillet.
Add remaining oil and scramble eggs until just cooked. Remove.
Cook onion, peas, carrots, and garlic for 2 to 3 minutes.
Add cold rice and break apart any clumps.
Stir-fry rice for about 4 minutes.
Return chicken and eggs to the skillet.
Add soy sauce, sesame oil, and black pepper.
Toss for 2 minutes and finish with green onions.