Rinse, trim, and thinly slice the antelope hearts into ¼-inch pieces, removing any connective tissue or valves.
In a shallow bowl, whisk together the eggs and water.
In a separate bowl, combine breadcrumbs, Parmesan cheese, parsley, garlic powder, salt, paprika, and cayenne.
Lightly dredge each slice of heart in the egg wash, then coat evenly in the breadcrumb mixture.
Heat canola oil in a skillet over medium-high heat.
Fry the breaded heart slices in batches, cooking 30–60 seconds per side until golden brown. Do not overcrowd the pan.
Transfer to a paper towel-lined plate. Finish with a pinch of salt and freshly grated Parmesan.
Serve immediately with BBQ sauce.