The amount of chicken in a meal prep depends on individual dietary needs and goals. However, a general guideline is about 3 to 4 ounces (85 to 113 grams) of cooked chicken per serving, which provides roughly 20 to 25 grams of protein. This portion size can be adjusted based on your activity level, weight goals, and overall dietary intake. For those looking to build muscle or increase their protein intake, portions may be increased to meet nutritional requirements.