In a medium bowl, gently mix together the strawberries, parsley, oregano, thyme, shallot, coconut oil, vinegar, stevia, salt and 1/4 tsp black pepper. Set aside.
Cut the steak crosswise into two equal pieces and then cut each piece lengthwise into four strips about 1" wide.
Place steak strips in a large bowl and add cumin, cayenne, chili powder, and remaining 1/4 tsp black pepper. Toss well to coat evenly.
Thread the steak strips onto four metal skewers (2 strips per skewer).
Grill skewers over high heat 3 to 5 minutes per side. Transfer to a cutting board and let meat rest 5 to 10 minutes.
Serve skewers with chimichurri sauce over the top.