Heat a large skillet over medium heat. Add 2 tablespoons of oil.
Add the bite-sized chicken pieces to the hot skillet and season the chicken with salt, black pepper, and smoked paprika.
Cook it for 3-4 minutes on low to medium heat, stirring occasionally, until the chicken turns light golden brown and is approximately 80% cooked.
Add the sliced garlic and onion to the skillet with the chicken. Sauté for 1 minute, stirring frequently, until the garlic becomes fragrant and the onion begins to soften and turn translucent.
Toss in the sliced bell peppers and carrots. Stir-fry for 3 minutes, keeping the vegetables moving in the pan to ensure even cooking. Avoid overcooking to preserve their vibrant color and texture.
Taste and adjust seasoning with additional salt and pepper if needed. Remove from heat immediately. Serve your one-pan chicken and vegetable skillet hot. Pair with rice, quinoa, or crusty bread for a complete meal.