This is believed to have been built as a Church's Chicken in the mid-1960s and became a Kentucky Fried Chicken in 1982 (many Church's in Houston became KFC for some reason around this time). In the early 1990s it closed and became Window Magic in 1992 (curtains and draperies) before closing in 2011, though the window treatment shop still resembled a former KFC. In March 2012 it was renovated and reopened as Del Taco, which was supposed to bring dozens of Del Taco stores back to the Houston (and greater Texas) area (for this previous attempt, please see this link), but it closed in May 2015, with the Dallas (and Austin area) stores going soon after. This was the only Houston-area store they ever opened.
The restaurant was renovated and reopened as Golden Chick (fried chicken once more, but resembling less of the KFC) in 2016, but it closed in 2019. 2020 brought the opening of 7 Leaves Cafe, a milk tea shop out of the California area, but by the end of 2021, it had also shut down. In October 2023 it reopened as a new location of Tim Hortons but removed the 1980s-style roofing that KFC added but the subsequent restaurants kept in one form or another. As you can see it looks quite different than is shown above.