Hi there, although some owners don't believe it, it is possible and your guy is just a bit too chunky. Just like teenagers can become overweight before adulthood, so can beardies. You could cut back on the live feeders and offer greens at least 3X a week [ turnip, mustard, collard, endive, dandelion, kale and also peas, green beans , squash ]
What is his diet like now ?