Denny’s Corp. (Nasdaq: DENN), the parent company of both Denny’s and Orlando-based Keke’s Breakfast Cafe, plans to close 150 Denny’s restaurants in the next 12-18 months, while simultaneously opening 12-16 new Keke’s locations.   Denny’s acquired Keke’s in 2022 for $82.5 million. The move gave Denny new access to participate in the fast-growing morning eatery segment, the company said at the time.  This significant shift in the company's strategy was announced during an Oct. 22…