Step 1

Stir together oyster sauce, soy sauce, and sugar. Season chicken with salt; pat dry. Heat a large skillet or wok over high; swirl in 2 tablespoons oil. Add half of chicken and cook, undisturbed, until browned on bottom, about 3 minutes. Transfer to a plate; repeat with remaining 2 tablespoons oil and chicken, leaving second batch in skillet.

Step 2

Return first batch of chicken to skillet along with shallots, garlic, and chile. Cook, stirring constantly, until fragrant and chicken is cooked through, 1 to 2 minutes. Stir in oyster-sauce mixture, then basil. Remove from heat; continue stirring until basil just wilts and sauce coats chicken. Serve immediately with rice, lime wedges, and basil leaves.