Warm oil in large, deep-sided skillet over medium heat until shimmering. Add minced garlic, and sauté, stirring, for about 1 minute, until fragrant. Add sausage and continue cooking, stirring frequently, for 3-5 minutes, or until browned on sides and edges.
Add chicken broth, rice, garlic powder, and pepper to the pan. Stir and bring to a boil. Reduce heat to low to maintain a simmer, and cover with a lid. Cook for 18-20 minutes, until rice is tender, and liquid is absorbed.
Remove from heat, taste, and add salt if needed. Stir in peas and green onions. Continue cooking for 3 minutes, then serve.