The Pentax K-1 is an SLR, K-Mount- the flange distance is 45.46 mm. Micro-43 is 19.25 mm. Even if you had an adapter, the lenses could only be used for extreme close-up.
Invest in K-Mount lenses for the camera, many are available inexpensively. You can pick up a 50/1.4 Manual focus lens for ~$30 or so, less than the price of most adapters.