Notable barbecue joints have closed at a more rapid pace than usual this year. That includes three spots from our 2021 Top 50 BBQ list and three more from the 2023 list of the 25 best new and improved barbecue joints in Texas. Those come on the heels of last year’s loss of Brett’s Family Barbecue, in Rockdale, and Pit Commander Barbecue, in Van Alstyne, which rebranded with a focus on wood-fired pizza under the name Texapolitan Pizza.Last year I predicted that the Texas barbecue bubble was about to burst. There were simply too many options for great barbecue, and restaurant owners worried there wouldn’t be enough diners to keep them all profitable. I talked to the several owners who chose to close their barbecue…